3.2 W GaN‐Based Photonic‐Crystal Surface‐Emitting Laser
OpenAlex · Laser & Photonics Review · 发表 2026-07-23 · 收录 2026-07-26 · 相关度 33.1
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中文摘要
摘要：光子晶体面发射激光器（PCSEL）凭借其单模工作和窄光束发散角的独特能力，已成为激光雷达、自由空间通信和材料加工等高功率、高亮度应用中前景广阔的光源。然而，将 PCSEL 拓展至蓝光波段仍然具有挑战性，主要原因是 GaN 基材料的低折射率和短波长会削弱光反馈，并增加制造难度和光散射损耗，从而导致极高的激光阈值。在本工作中，我们展示了在 GaN 衬底上采用优化的外延结构和光子晶体设计制造的、工作波长为 430.5 nm 的免再生长瓦级 GaN 基 PCSEL。该器件实现了 4 kA/cm² 的阈值电流密度和室温下 3.2 W 的峰值输出功率；据我们所知，这是目前报道的最高输出功率。本工作为采用简化制造工艺实现高功率可见光 PCSEL 提供了一条可行路径，并在未来的高亮度照明和显示应用中展现出巨大潜力。
英文摘要
ABSTRACT Photonic‐crystal surface‐emitting lasers (PCSELs) have emerged as promising light sources for high‐power, high‐brightness applications such as LiDAR, free‐space communication, and material processing, owing to their unique capabilities for single‐mode operation and narrow beam divergence. However, extending PCSELs into the blue wavelength regime remains challenging, primarily due to the low refractive index and short wavelength of GaN‐based materials, which weakens optical feedback and increases the fabrication difficulty and optical scattering loss, resulting in very high lasing thresholds. In this work, we demonstrate regrowth‐free, watt‐class GaN‐based PCSELs operating at 430.5 nm, fabricated on GaN substrates using an optimized epitaxial structure and photonic crystal design. The device achieved a threshold current density of 4 kA/cm 2, and a peak output power of 3.2 W at room temperature, which, to our knowledge, is the highest output power reported. This work provides a viable pathway toward high‐power visible PCSELs with simplified fabrication processes, offering significant potential for high‐brightness lighting and display applications in the future.
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Carrier-Induced Mode Redistribution Enabling Scalable Single-Mode Lasing in Ultra-Large-Area Photonic-Crystal Surface-Emitting Lasers
OpenAlex · IEEE Journal of Selected Topics in Quantum Electronics · 发表 2026-06-15 · 收录 2026-07-22 · 相关度 16.8
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中文摘要
光子晶体面发射激光器（PCSEL）能够在超大发射面积上实现相干激光振荡，因此作为适用于多种应用的下一代高功率光源而备受关注。为了使超大面积 PCSEL 在远高于激光阈值的条件下保持稳定的单模激光振荡，有必要理解振荡模式如何通过载流子与光子之间的相互作用在时间和空间上演化。本文在考虑载流子–光子相互作用的情况下，对超大面积（3∼10 mm）PCSEL 的激光振荡特性进行了全面的数值分析，重点研究即使在高电流注入下仍能在超大面积上实现单模振荡的物理机制。我们揭示，由于载流子诱导的折射率变化及其产生的弱模式间隙效应，大面积 PCSEL 内部最初集中在增益区中心的单峰光子分布会自发改变。当激光振荡发生在具有适当能带曲率的带边模式上时，随着注入电流增加，光子分布会变得越来越均匀，并与注入电流的分布相似。这种模式再分布（或离域化）可抑制空间烧孔效应，并有利于在高电流注入下维持单模振荡。此外，通过调控器件内部的注入电流分布，我们可以灵活改变发射轮廓，例如形成类高斯分布。我们的研究结果加深了对超大面积单模 PCSEL 激光振荡特性的理解，并为未来在实验上实现 kW 级单模振荡提供了重要指导。
英文摘要
Photonic-crystal surface-emitting lasers (PCSELs) are attracting attention as next-generation high-power light sources for a variety of applications owing to their capability for coherent lasing oscillation over ultra-large emission areas. To maintain stable single-mode lasing in ultra-large-area PCSELs far above the lasing threshold, it is essential to understand how the oscillation modes evolve in time and space via the interaction between carriers and photons. In this paper, we perform a comprehensive numerical analysis of the lasing characteristics of ultra-large-area (3∼10-mm) PCSELs considering carrier-photon interactions, focusing specifically on the physics that allows single mode oscillation over an ultra-large area even under high current injection. We reveal that, owing to carrier-induced refractive index changes and the resultant weak mode-gap effect, the initial unimodal photon distributions concentrated at the center of the gain region inside large-area PCSELs are spontaneously altered. When lasing oscillation occurs at a band-edge mode with an appropriate band curvature, the photon distribution becomes increasingly uniform as the injection current increases, resembling the distribution of the injection current. Such mode redistribution (or delocalization) suppresses spatial hole burning and is advantageous for maintaining single-mode oscillation even at high current injection. In addition, by tailoring the injection current distribution inside the device, we can flexibly change the emission profile to, for example, Gaussian-like distributions. Our findings provide deeper insight into the lasing characteristics of ultra-large-area single-mode PCSELs, and offer an important guideline for the experimental demonstration of kW-class single mode oscillation in the future.
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Graph State Generation Based on Quantum Photonic Devices, Enabling Measurement-Based Quantum Computing
arXiv · 发表 2026-07-18 · 收录 2026-07-21 · 相关度 10.4
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中文摘要
光子簇态是基于测量的量子计算（MBQC）的基础资源，而 MBQC 是一种很有前景的可扩展量子计算方法。这些高度纠缠态能够通过局域测量而非门操作实现计算，因此对于容错量子计算至关重要。光子簇态的生成需要高质量的纠缠和稳定性，这可以通过腔量子电动力学（cavity QED）来实现，即将量子点（QD）嵌入光子微腔中。该方法能够实现受控的单光子发射及其纠缠，有助于解决光子簇态生成中的关键挑战。增强光子簇态的生成需要提高腔与 QD 系统的品质因数（Q factor），进而提升其协同性。高 Q factor 有助于减少光子损耗和退相干，从而确保量子态更加稳定并具有更高保真度。它还能增强光与物质的相互作用，提高簇态质量。协同性用于衡量光–物质耦合强度相对于耗散的大小，并直接影响光子发射效率。对这些参数进行优化可改善纠缠生成，而这对于产生高质量光子簇态至关重要。因此，优化腔体对于改善光子簇态的生成至关重要。可扩展性也是生成量子计算所用大规模簇态的一个重要参数。本文在综述 MBQC、簇态及光子簇态生成之后，研究了用于 MBQC 的光子簇态资源的确定性生成，并强调了逆向设计技术对于实现这一目标的重要性。
英文摘要
Photonic cluster states are fundamental resource for measurement-based quantum computing (MBQC), which is a promising approach for scalable quantum computing. These highly entangled states enable computation with applying local measurements rather than gate operations, which makes them essential for fault-tolerant quantum computing. Generation of the photonic cluster states requires high-quality entanglement and stability, which can be done by making use of cavity quantum electrodynamics (cavity QED), which is embedding quantum dots (QDs) into photonic microcavities. This method enables controlled single-photon emission and the entanglement of them, helping with key challenges in generating photonic cluster states. Enhancing the generation of the photonic cluster state requires improvement in the quality factor (Q-factor) and therefore, cooperativity of cavity and QD systems. A high Q-factor helps with reduction in photon loss and decoherence, ensuring more stable and high-fidelity quantum states. It also enables better light-matter interactions, improving cluster state quality. Cooperativity, which is a measure for the light-matter coupling strength relative to dissipation, directly impacts photon emission efficiency. Optimization of these parameters improves entanglement generation, which is essential for producing high-quality photonic cluster states. Therefore, optimized cavities are essential for improving the generation of the photonic cluster states. Scalability is also an important parameter for the generation of the large-scale cluster states used in quantum computing. In this paper, after reviewing MBQC, cluster states, and the generation of the photonic cluster states, we investigate the deterministic generation of the photonic cluster state resource for the purpose of MBQC, and highlights the importance of the inverse design techniques for this goal.
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- 可用线索：AI 代理模型/逆向设计。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quality factor / q factor。
Mid-Infrared Single-Photon Detection via Enhanced Cross-Phase Modulation in Topology-Optimized Epsilon-Near-Zero Dual-Wavelength Nanocavities
arXiv · 发表 2026-07-11 · 收录 2026-07-14 · 相关度 8.4
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中文摘要
我们采用具有吸收损耗的开放式谐振纳米结构的格林张量量子化理论，研究集成于双波长纳米腔内、具有有效非线性极化率 $χ^{(3)}(ω)$ 的纳米尺度 Kerr 型近零介电常数（ENZ）材料中的单光子水平交叉相位调制（XPM）过程。我们得到了混合纳米腔中可实现的 XPM 频移的一般解析公式，该纳米腔可同时俘获波长为 1.5 $μ$m 的经典探测（信号）光束和波长为 3 $μ$m 的单光子泵浦。针对室温下的中红外光子探测，我们全面分析了量子非破坏模式下单光子探测的基本极限，其中在周围的硅（Si）环境中嵌入了一小块具有 ENZ 增强 Kerr 型非线性的高迁移率氧化镉（CdO）纳米尺度区域
英文摘要
We use the Green's tensor quantization theory for open resonant nanostructures with absorption losses to study the cross-phase modulation (XPM) process at the single photon level in nanoscale Kerr-type epsilon-near-zero (ENZ) materials with an effective nonlinear susceptibility $χ^{(3)}(ω)$ integrated inside dual-wavelength nanocavities. We obtain general analytical formulas for the achievable XPM frequency shift in a hybrid nanocavity that simultaneously traps a classical probe (signal) beam at 1.5 $μ$m and single photon pump at 3 $μ$m wavelengths. By focusing on mid-infrared photon detection at room temperature, we present a comprehensive analysis of the fundamental limits for single photon detection in the quantum nondemolition modality for a nanoscale region of high mobility cadmium oxide (CdO) with ENZ-enhanced Kerr-type nonlinearity embedded in a surrounding silicon (Si) environmen
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- 主线关联：更偏photonics / nanocavity / FEM，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：FEM。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Buried dielectric quasi-photonic-crystal surface-emitting lasers
OpenAlex · Applied Physics Letters · 发表 2026-07-06 · 收录 2026-07-09 · 相关度 33.0
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中文摘要
我们报道了一种准光子晶体面发射激光器（QPCSEL），其采用被高折射率外延半导体包围的亚微米低折射率埋入式介电结构来形成准光子晶体层。我们在室温下实现了埋入式介电 QPCSEL 的光泵浦激光发射，发射波长为 1.5 μm。QPCSEL 以准周期光子晶体取代传统的周期性折射率图案，从而产生单模发射。我们的埋入式介电方案能够实现光子晶体的固态集成，同时在半导体外延再生长过程中保持复杂的图案化几何结构。
英文摘要
We report a quasi-photonic-crystal surface-emitting laser (QPCSEL) that employs sub-micron, low-index buried dielectric features surrounded by high-index epitaxial semiconductor to form the quasi-photonic-crystal layer. We demonstrate photopumped lasing from a buried dielectric QPCSEL at room temperature with emission wavelength at 1.5 μm. QPCSELs replace the conventional periodic refractive index pattern with a quasi-periodic photonic crystal, which produces single mode emission. Our buried dielectric approach enables solid-state integration of the photonic crystal while preserving the complex patterned geometry during epitaxial semiconductor regrowth.
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为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
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- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Three-Dimensional Coupled-Wave Analysis for Photonic-Crystal Surface-Emitting Lasers With External Optical Feedback
OpenAlex · IEEE Journal of Selected Topics in Quantum Electronics · 发表 2026-06-15 · 收录 2026-07-09 · 相关度 25.9
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中文摘要
光子晶体面发射激光器（PCSEL）通过引入光子晶体谐振器实现大面积相干振荡，从而获得高输出功率和优异的光束质量。光子晶体设计的进步带来了增强的功能，包括光束扫描、高速调制和窄线宽工作。作为进一步拓展 PCSEL 功能的一种有前景的方法，我们考虑了由外部反射器引起的自注入光反馈；此前已有研究报道，在传统半导体激光器中，该方法可实现线宽压窄和调制带宽扩展。本文开发了一种能够分析具有外部光反馈的 PCSEL 的数值方法，并基于该框架对其激光振荡特性进行了理论研究。首先，我们表明，激光模式是通过光子晶体内部的大面积横向谐振模式与外部反射器引入的纵向法布里–珀罗模式之间的耦合形成的，同时保持具有窄发散角的单横模工作。我们还揭示，通过调节反馈强度和延迟时间可以实现单纵模工作，而通过控制反射相位还可以实现频率扫描工作。这些结果表明，外部光反馈可为实现 PCSEL 的先进功能提供一种有效途径。
英文摘要
Photonic-crystal surface-emitting lasers (PCSELs) enable large-area coherent oscillation by incorporating a photonic crystal resonator, thereby realizing high output power and excel lent beam quality. Advances in photonic-crystal design have led to enhanced functionalities, including beam steering, high-speed modulation, and narrow-linewidth operation. As a promising approach to further extending the functionality of PCSELs, self-injection optical feedback induced by an external reflector, which has been previously reported in conventional semiconductor lasers to achieve linewidth narrowing and expansion of the modulation bandwidth, is considered. In this paper, we develop a numerical method that enables the analysis of PCSELs with external optical feedback, and we conduct a theoretical investigation on its lasing characteristics based on this framework. First, we show that the lasing modes are formed through the coupling between the large area transverse resonant modes inside the photonic crystal and the longitudinal Fabry–Pérot modes introduced by the external reflector, while maintaining single-transverse-mode operation with a narrow divergence angle. We also reveal that single-longitudinal mode operation can be achieved by adjusting the feedback strength and the delay time, where frequency sweep operation can be also realized by controlling the reflection phase. These results suggest that external optical feedback can provide an effective approach for realizing advanced functionality of PCSELs.
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- 可用线索：CWT。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 divergence angle。
On-Demand Coherent Nanolaser Metalens and Beam Steering Enabled by Physics-Informed Neural Networks
arXiv · 发表 2026-07-01 · 收录 2026-07-05 · 相关度 11.0
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中文摘要
人工智能与物理建模的结合为加速有源纳米光子器件的设计提供了一条变革性路径。在这里，我们提出 NanoPhotoNet-Lase，这是一个物理信息神经网络（PINN）框架，将激光发射的电磁方程和速率方程直接嵌入其学习过程中，以加快超表面纳米激光器的设计。通过将 Maxwell 矢量 Helmholtz 方程与染料增益介质的四能级粒子数动力学相耦合，该模型实现了由物理引导的光学响应预测，从而能够在任意纳米结构几何形状和材料配置下快速估计激光阈值。利用高折射率超表面腔，NanoPhotoNet-Lase 模型识别出支持准连续谱束缚态（BICs）的优化几何结构，具有强约束和高 Q factor。预测的 las
英文摘要
The integration of artificial intelligence with physical modeling offers a transformative route for accelerating the design of active nanophotonic devices. Here, we present NanoPhotoNet-Lase, a physics-informed neural network (PINN) framework that embeds the electromagnetic and rate equations of lasing directly into its learning process to expedite the design of metasurface nanolasers. By coupling Maxwell's vector Helmholtz equation with the four-level population dynamics of dye gain media, the model achieves physics-guided prediction of optical responses, enabling rapid estimation of lasing thresholds across arbitrary nanostructure geometries and material configurations. Using high-index metasurfaces cavity, the NanoPhotoNet-Lase model identifies optimized geometries supporting quasi-bound states in the continuum (BICs) with strong confinement and high-quality factors. The predicted las
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- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
High-brightness scalable continuous-wave single-mode photonic-crystal laser
Crossref · Nature · 发表 2023-06-14 · 收录 2026-07-04 · 相关度 23.3
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中文摘要
摘要 实现大规模单模、高功率、高光束质量的半导体激光器，使其可与笨重的气体和固态激光器相媲美（甚至取代它们），是光子学和激光物理的终极目标之一。然而，传统高功率半导体激光器由于多模振荡的出现，不可避免地受到较差光束质量的影响，并且在连续波（CW）工作下，振荡还会因破坏性的热效应而失稳。在这里，我们通过开发大规模光子晶体面发射激光器克服了这些挑战，该激光器在光子晶体内部具有受控的 Hermitian 和 non-Hermitian 耦合，并预先设置了晶格常数的空间分布，从而即使在 CW 条件下也能维持这些耦合。实现了超过 50 W 的 CW 输出功率、纯单模振荡以及异常狭窄的光束发散
英文摘要
Abstract Realizing large-scale single-mode, high-power, high-beam-quality semiconductor lasers, which rival (or even replace) bulky gas and solid-state lasers, is one of the ultimate goals of photonics and laser physics. Conventional high-power semiconductor lasers, however, inevitably suffer from poor beam quality owing to the onset of many-mode oscillation 1,2 , and, moreover, the oscillation is destabilized by disruptive thermal effects under continuous-wave (CW) operation 3,4 . Here, we surmount these challenges by developing large-scale photonic-crystal surface-emitting lasers with controlled Hermitian and non-Hermitian couplings inside the photonic crystal and a pre-installed spatial distribution of the lattice constant, which maintains these couplings even under CW conditions. A CW output power exceeding 50 W with purely single-mode oscillation and an exceptionally narrow beam div
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为什么与你有关：
- 主线关联：更偏photonics / photonic crystal laser / photonic crystal，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Enhanced urine refractive index sensing using a defect-engineered one-dimensional photonic crystal
OpenAlex · Scientific Reports · 发表 2026-06-25 · 收录 2026-07-03 · 相关度 8.1
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中文摘要
在这项工作中，提出了一种缺陷工程一维光子晶体（1D PhC）传感器，用于高分辨率尿液折射率检测。该结构由交替的 TiO₂/MgF₂ 层组成 Bragg 反射镜，并带有一个填充尿液的中心缺陷腔，在其中于光子带隙内产生尖锐的局域共振。基于传输矩阵法的数值分析表明，随着尿液折射率从 1.333 增加到 1.360，缺陷模式发生稳定红移。所提出的传感器实现了 388.57 nm/RIU 的灵敏度，并具有优异线性度 [Formula: see text]，同时平均 FWHM 为 0.0305 nm，平均 Q-factor 为 [Formula: see text]，平均 FOM 为 [Formula: see text]。在 ±2.5% 厚度变化下的容差分析证实，共振仍然狭窄且定义良好，显示出良好的制造鲁棒性。
英文摘要
In this work, a defect-engineered one-dimensional photonic crystal (1D PhC) sensor is proposed for high-resolution urine refractive-index detection. The structure consists of alternating TiO₂/MgF₂ layers forming Bragg mirrors with a central urine-filled defect cavity, where a sharp localized resonance is generated inside the photonic band gap. Numerical analysis based on the transfer matrix method shows a stable red shift of the defect mode as the urine refractive index increases from 1.333 to 1.360. The proposed sensor achieves a sensitivity of 388.57 nm/RIU with excellent linearity [Formula: see text], together with an average FWHM of 0.0305 nm, an average Q-factor of [Formula: see text] and an average FOM of [Formula: see text]. A tolerance analysis under ± 2.5% thickness variation confirms that the resonance remains narrow and well defined, demonstrating good fabrication robustness.
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为什么与你有关：
- 主线关联：更偏photonics / photonic crystal / Q factor，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 q factor。
High-purity linearly polarized emission from a compact BIC laser
OpenAlex · Light Science & Applications · 发表 2026-06-23 · 收录 2026-07-03 · 相关度 15.8
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中文摘要
连续域束缚态（BIC）赋予光子晶体（PhC）激光器超高品质因子，从而使其能够实现低阈值。然而，BIC 具有动量空间矢量偏振涡旋，这对实现高纯度偏振发射构成了重大障碍。传统上，可通过各种对称性微扰来控制 PhC 激光器的偏振。然而，由于实际激光系统固有的有限尺寸效应，其发射的偏振纯度较低。因此，在不显著牺牲其他性能指标的情况下实现 PhC 激光发射的高偏振纯度，一直是一项长期挑战。在此，我们提出了一种色散辅助偏振控制策略，用于对 PhC 激光发射进行单片式偏振调控。作为概念验证，我们展示了一种紧凑型准 BIC 激光器的线偏振发射，其偏振消光比高达约 300:1，同时良好保持了单模工作和高光束质量。我们的工作为片上激光器的高效偏振调控开辟了道路。由此获得的器件可为相干光通信、先进显示技术和多种精密测量应用提供小型化偏振光源。
英文摘要
Bound states in the continuum (BICs) confer ultrahigh quality factors and, thus, enable low thresholds upon photonic crystal (PhC) lasers. However, BICs feature a momentum-space vectorial polarization vortex, posing a substantial obstacle in achieving high-purity polarized emission. Traditionally, polarization control of a PhC laser can be achieved through various symmetry perturbations. However, the emission suffers from low polarization purity due to the finite-size effect inherent in real laser systems. Achieving a high polarization purity in PhC laser emission without significantly sacrificing other performance metrics has thus been a persistent challenge. Here, we develop a dispersion-assisted polarization control strategy for monolithic polarization engineering of PhC laser emission. As a proof of concept, we have demonstrated a linearly-polarized emission from a compact quasi-BIC laser with a high polarization extinction ratio of ~300:1, while single-mode operation and high beam quality are well-maintained. Our work paves a way for efficient polarization tailoring of on-chip lasers. The resulting devices deliver a miniaturized polarization light source for applications across coherent optical communication, advanced display technology, and diverse precision measurements.
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为什么与你有关：
- 主线关联：更偏photonics / photonic crystal，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Structured lasing with disordered high- <i>Q</i> perovskite cavities
OpenAlex · Science Advances · 发表 2026-05-13 · 收录 2026-07-03 · 相关度 8.5
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中文摘要
具有低阈值和按需结构光输出的纳米尺度激光器对于紧凑型集成光子技术至关重要。将工程化无序引入高品质因子（Q）谐振腔是一条有前景的路线，但不准确的无序到相位对应关系以及有限的对称性破缺机制限制了输出激光中可实现的光学结构。在这里，通过揭示平移无序和旋转无序是两种解耦的对称性破缺机制，我们提出了无序叠加无序（DoD）超腔，它允许定制本征模以实现多通道激光发射控制，同时保持高 Q 共振。在实验中，我们将钙钛矿构造成完全单片的 DoD 超腔，以最大化模式-增益重叠，并展示了具有低阈值（约 7 微焦每平方厘米）、高 Q（约 10）的结构化激光
英文摘要
Nanoscale lasers with low thresholds and on-demand structured light output are essential for compact integrated photonic technology. Introducing engineered disorder into high quality–factor ( Q ) resonant cavities emerges as a promising route, yet the inaccurate disorder-to-phase correspondence and the limited symmetry breaking mechanisms restrict the achievable optical structures in output lasers. Here, by revealing translational disorder and rotational disorder as two decoupled symmetry-breaking mechanisms, we propose disorder-on-disorder (DoD) meta-cavities that allow for customizing eigenmodes for multichannel lasing emission control while preserving high- Q resonances. In the experiment, we structure perovskite into fully monolithic DoD meta-cavities to maximize mode-gain overlap and demonstrate structured lasing with low threshold (~7 microjoules per square centimeter), high Q (~10
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为什么与你有关：
- 主线关联：更偏photonics / Q factor，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quality factor。
Quantum Cascade Photonic Crystal Surface-Emitting Laser With Lateral Coupling Cavity at 9.4 μm
Semantic Scholar · IEEE Photonics Technology Letters · 发表 2026-01-01 · 收录 2026-06-28 · 相关度 32.5
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中文摘要
光子晶体（PC）是实现表面发射量子级联激光器的优良方案。光子晶体阵列的尺寸与成本和散热均有密切关系。我们报道了在 $9.4~\mu $ m 处、具有紧凑 PC 尺寸的量子级联光子晶体表面发射激光器（QC-PCSELs），展示了 140 mW 的峰值输出功率。PC 结构通过从表面进行深刻蚀工艺制备。通过引入椭圆结构 PC 并调节轴比和填充因子，面内对称性被打破，Q factors 得到调谐，并优化了输出功率和单模性能。并且通过引入横向耦合腔来补偿寄生损耗，可以降低阈值电流。此外，我们通过一种特殊的聚焦离子束（FIB）sec 研究了 PC 深度对激光器性能的影响。
英文摘要
Photonic crystal (PC) is an excellent solution to realize a surface-emitting quantum cascade laser. The size of photonic crystal array has a severe relevance with both cost and heat dissipation. We report quantum cascade photonic crystal surface-emitting lasers (QC-PCSELs) at $9.4~\mu $ m with compact PC dimension, demonstrating a peak output power of 140 mW. The PC structure is fabricated by deep-etching process from the surface. Through introducing an elliptical structure PC and adjusting the axis ratio and filling factor, in-plane symmetry is broken and the Q factors have been tuned, and the output power and single-mode performance have been optimized. And by introducing lateral coupling cavity to compensate the parasitic loss, the threshold current can be reduced. Furthermore, we investigate the influence of PC depth on the performance of laser by a special focused ion beam (FIB) sec
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为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
1.5 µm wavelength NPN-type photonic-crystal surface-emitting laser exceeding 100 mW.
Semantic Scholar · Optics Express · 发表 2023-01-01 · 收录 2026-06-28 · 相关度 41.3
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中文摘要
1.5 µm 激光二极管在眼安全光探测与测距（LiDAR）以及通过光子集成电路实现的光通信中具有应用。光子晶体表面发射激光器（PCSELs）由于具有窄光束发散角（<1 度），在紧凑光学系统中具有无透镜应用。然而，对于 1.5 µm PCSELs，输出功率仍低于 1 mW。为了获得更高输出功率，一种方法是抑制光子晶体层中 p 型掺杂剂 Zn 的扩散。因此，上部晶体层采用了 n 型掺杂。此外，提出了一种 NPN 型 PCSEL 结构，以降低 p-InP 层中的价带间吸收。在这里，我们展示了一种输出功率为 100 mW 的 1.5 µm PCSEL，其输出功率比此前报道值高出两个数量级。
英文摘要
A 1.5 µm laser diode has applications in eye-safe light detection and ranging (LiDAR) and optical communications via photonic integrated circuits. Photonic-crystal surface-emitting lasers (PCSELs) have lens-free applications in compact optical systems because of narrow beam divergences (<1 degree). However, the output power has still been less than 1 mW for 1.5 µm PCSELs. For higher output power, one approach is suppression of p-dopant Zn diffusion in the photonic crystal layer. Therefore, n-type doping was used for the upper crystal layer. Moreover, an NPN-type PCSEL structure was proposed to reduce intervalence band absorption in the p-InP layer. Here, we demonstrate a 1.5 µm PCSEL with 100 mW output power, which exceeds previous reported values by two orders of magnitude.
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为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Size Scaling Law for Radiation Losses of Modes in Photonic Crystal Surface Emitting Devices
arXiv · 发表 2026-03-03 · 收录 2026-06-27 · 相关度 23.7
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中文摘要
光子晶体面发射激光器（PCSEL）因能够产生超高功率、低发散度的激光束而受到广泛关注。这是因为它们能够以比传统半导体激光器大数个数量级的体积实现高功率单模激射。PCSEL 有限的横向尺寸是限制其激射模式体积并进而限制其输出功率的主要因素。我们证明，总腔损耗 α=α_⊥+α_∥ 与器件尺寸 L 之间的缩放关系为：表面辐射损耗按照 α_⊥∼O(L^−2) 缩放，而边缘辐射损耗按照 α_∥∼O(L^−3) 缩放。这两种缩放关系均可通过能带图中复频率 ω(k) 的二阶展开来解释。我们的结果为优化 PCSEL 设计提供了明确的指导。
英文摘要
Photonic-crystal surface-emitting lasers (PCSELs) have garnered significant attention due to their ability to generate laser beams with ultra high power and low divergence. This is because they support high power single mode lasing with volumes orders of magnitude larger than those of conventional semiconductor lasers. The finite lateral size in a PCSEL is a primary factor limiting its lasing mode volume and consequently, its output power. We demonstrate that the scaling relation between the total cavity loss $α=α_\perp + α_\parallel$ and the device size $L$ is such that the surface radiation loss scales as $α_{\perp} \sim O(L^{-2})$, while the edge radiation loss $α_{\parallel} \sim O(L^{-3})$. Both scaling relations can be explained by the second order expansions of the complex frequency $ω(k)$ of the band diagram. Our results constitute an explicit guideline for PCSEL designs to optim
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为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 mode volume。
A synergistic approach to optical modeling of PCSELs through rigorous methods and the coupled-wave theory
arXiv · 发表 2026-02-27 · 收录 2026-06-27 · 相关度 20.8
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中文摘要
目前已开发出多种用于光子晶体面发射激光器（PCSEL）光学建模的数值和半解析方法。然而，系统比较这些方法的预测能力并确定各自适用范围的框架在很大程度上仍未得到探索。在本工作中，我们提出了一种比较方法：在耦合波理论框架内，对包括严格数值方法和基于有效折射率的方法在内的四种代表性方法进行分析并实现部分混合。以单晶格和双晶格 PCSEL 为代表性模型，我们证明，该方法不仅揭示了严格方法与耦合波理论框架的预测结果之间的根本差异，还能够捕捉与激光运行相关的连续谱束缚态（BIC）的泄漏相和对称性破缺相。
英文摘要
A wide range of numerical and semi-analytical approaches has been developed for optical modeling of photonic-crystal surface-emitting lasers (PCSELs). However, a systematic framework for comparing their predictive capabilities and identifying their respective validity limits remains largely unexplored. In this work, we introduce a comparative methodology in which four representative methods-including rigorous numerical and effective-index-based approaches-are analyzed and partially hybridized within a coupled-wave-theory framework. Using single- and double-lattice PCSELs as representative models, we demonstrate that this approach not only reveals fundamental differences between predictions of rigorous methods and the coupled-wave-theory framework, but also captures leaky and symmetry-broken phases of bound states in the continuum (BICs) relevant for laser operation.
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为什么与你有关：
- 主线关联：更偏photonics / photonic crystal / CWT，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：CWT。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Compact structured light generation based on meta-hologram PCSEL integration
Semantic Scholar · Discover Nano · 发表 2023-01-01 · 收录 2026-06-27 · 相关度 41.0
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中文摘要
超表面作为一类光学元件目录，可按需提供众多新功能。此前研究已将它们与垂直腔面发射激光器（VCSELs）集成。然而，其性能受到 VCSELs 特性的限制，例如低输出功率和大发散角。尽管 VCSEL 阵列模块的方案可以解决这些问题，但额外透镜和较大尺寸限制了实际应用。在本研究中，我们通过将光子晶体表面发射激光器与为结构光生成而设计的超表面全息图进行紧凑集成，实验展示了全息图像的重建。该研究展示了超表面的灵活设计能力、高输出功率（毫瓦量级），以及在无需收集透镜的情况下生成具有宽视场且均匀性良好的图像的能力，使其适用于三维成像和传感。
英文摘要
Metasurfaces, a catalog of optical components, offer numerous novel functions on demand. They have been integrated with vertical cavity surface-emitting lasers (VCSELs) in previous studies. However, the performance has been limited by the features of the VCSELs such as low output power and large divergence angle. Although the solution of the module of VCSEL array could solve these issues, the practical application is limited by extra lens and large size. In this study, we experimentally demonstrate reconstruction of a holographic images using a compact integration of a photonic crystal surface-emitting laser and metasurface holograms designed for structured light generation. This research showcases the flexible design capabilities of metasurfaces, high output power (on the order of milliwatts), and the ability to produce well-uniformed images with a wide field of view without the need for a collection lens, making it suitable for 3D imaging and sensing.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 divergence angle。
Real-time LiDAR module with 64x128-pixel CMOS SPAD array and 940-nm PCSEL
Semantic Scholar · Sensors Applications Symposium · 发表 2022-01-01 · 收录 2026-06-27 · 相关度 41.7
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中文摘要
高级驾驶辅助系统和自动驾驶对高性能光探测与测距（LiDAR）模块有很高需求。长距离测距所需的发射器高功率水平是实现商业上可负担的车载 LiDAR 需要解决的关键问题之一。在这项工作中，我们首次展示了一种低成本实时 LiDAR 模块，该模块使用 CMOS 制造的 64x128 像素单光子雪崩二极管（SPAD）阵列、940 nm 光子晶体表面发射激光器（PCSEL）以及用于控制和信号处理的 FPGA 卡。得益于 SPAD 的高灵敏度和 PCSEL 的小发散角，我们以约 0.5 W 的低激光峰值功率实现了 60 m 三维成像器。在目标反射率为 10% - 90%、阳光条件为 0–50k lux 时，测距距离和帧率分别为 60 m 和每秒 10 帧。我们的工作揭示了这两种引人关注的器件在制造低成本高性能车载 LiDAR 方面的巨大潜力。
英文摘要
High-performance light detection and ranging (LiDAR) modules are highly demanded for advanced driving assistance system and autonomous driving. The high power level of emitter required for long-distance ranging is one of the key issues to be addressed to realize commercially affordable vehicle LiDAR. In this work, for the first time, we demonstrate a low-cost real-time LiDAR module by using CMOS-fabricated 64x128-pixel single-photon avalanche diode (SPAD) array, a 940-nm photonic-crystal surface-emitting laser (PCSEL), and a FPGA card for control and signal processing. Thanks to the high-sensitivity of SPAD and small divergence angle of PCSEL, a 60-m 3-D imager has been realized with a low laser peak power of ~0.5 W. The ranging distance and frame rate are 60 m and 10 frames per second, respectively, for the target reflectivity of 10% - 90% and the sunlight condition of 0 – 50k lux. Our work reveals the great potential of these two intriguing devices for making low-cost high-performance vehicle LiDARs.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 divergence angle。
Inverse designed photonic crystal waveguides for pulsed operation: dispersion, losses, and controlled light-matter interactions
arXiv · 发表 2026-06-23 · 收录 2026-06-26 · 相关度 10.4
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中文摘要
光子晶体波导（PCWs）是光学技术的强大平台，因为它们能够在亚波长尺度上对光进行空间限制，并操控传播模式的群速度，这两者都会增强光-物质相互作用。光子学中的许多应用需要具有低损耗和恒定速度慢光的大带宽，这对以往的色散和 Bloch 模式工程技术构成了重大挑战。通过将逆向设计与高效模式求解器和基于物理的公式相结合，我们将 PCW 设计的计算时间减少了 100 倍以上，从而实现了带宽最高增加一个数量级、损耗最高降低 4 倍的 PCW。随后我们探讨了带宽、无序诱导损耗、群折射率和色散之间的权衡。作为示例，我们将这种方法应用于两个有源且实际的领域
英文摘要
Photonic crystal waveguides (PCWs) are a powerful platform for optical technologies because they can spatially confine light on sub-wavelength scales and manipulate the group velocity of propagation modes, both of which enhance light-matter interactions. Many applications in photonics require a large bandwidth of low-loss and constant-velocity slow light, a significant challenge for previous dispersion and Bloch mode engineering techniques. By combining inverse design with an efficient mode solver and physics based formulas, we reduce the computational time of PCW designs by more than 100 times, allowing for the realization of PCWs with up to an order of magnitude increase in bandwidth and up to 4 times decrease in loss. We then explore the trade-offs between bandwidth, disorder-induce loss, group index, and dispersion. As examples, we apply this approach to two active and practical area
为什么与你有关
为什么与你有关：
- 主线关联：更偏photonics / photonic crystal，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：AI 代理模型/逆向设计。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Electrically driven heterogeneous III-V/Si photonic crystal surface-emitting laser.
Semantic Scholar · Optics Letters · 发表 2025-01-01 · 收录 2026-06-26 · 相关度 42.4
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中文摘要
我们展示了一种基于 III-V/Si 异质集成的 C 波段电驱动光子晶体表面发射激光器（PCSEL），其中在硅层上图案化的二维光子晶体（PhC）为激光作用提供面内分布反馈和模式选择性，而直接键合的 InP 基外延晶圆提供光学增益。该器件在脉冲注入下实现了 64 mA 的低阈值和超过 100 mW 的峰值输出功率。在连续波运行中，在受控 TEC 温度 5℃ 下，单模激光从 55 mA 阈值开始，输出最高达 3 mW。温度依赖性测量突出了热效应对性能的重要性。我们的发现强调了异质 PCSELs 作为硅光子学紧凑片上光源的潜力。
英文摘要
We demonstrate a C-band electrically driven photonic-crystal surface-emitting laser (PCSEL) based on III-V/Si heterogeneous integration, in which a 2D photonic crystal (PhC) patterned on the silicon layer provides in-plane distributed feedback and mode selectivity for lasing action, while a directly bonded InP-based epitaxial wafer supplies optical gain. The device achieves a low threshold of 64 mA and peak output power over 100 mW under pulsed injection. In continuous-wave operation, single-mode lasing begins at a threshold of 55 mA with up to 3 mW output under controlled TEC temperature of 5℃. Temperature-dependent measurements highlight the importance of thermal effects on performance. Our findings underscore the potential of heterogeneous PCSELs as compact on-chip light sources for silicon photonics.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Regrowth-free blue GaN-based photonic crystal surface-emitting lasers with triangular air holes
OpenAlex · Applied Physics Letters · 发表 2026-06-15 · 收录 2026-06-19 · 相关度 40.0
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中文摘要
我们报道了采用免再生长方法制造的室温蓝光 GaN 光子晶体面发射激光器（PCSEL）二极管的成功实现。通过采用具有改进三角形空气孔的方形晶格光子晶体结构，我们实现了稳健的二维单模激光振荡。该器件的阈值电流密度为 5.2 kA/cm²，并发射高斯形光束，其光束发散角极低，测得为 1.15 mrad（0.066°）。此外，三角形空气孔的对称性破缺特性使其产生垂直于三角形长边的稳定线偏振。本工作表明，采用具有简单孔形的免再生长制造工艺即可实现高光束质量的蓝光 PCSEL，为高性能蓝光激光光源铺平了道路。
英文摘要
We report the successful realization of a room-temperature blue GaN photonic crystal surface-emitting laser (PCSEL) diode fabricated using a regrowth-free approach. By employing a square lattice photonic crystal structure with modified triangular air holes, we achieve robust two-dimensional single-mode lasing. The device operates with a threshold current density of 5.2 kA/cm2 and emits a Gaussian-shaped beam with exceptionally low beam divergence, measured at 1.15 mrad (0.066°). Furthermore, the symmetry-breaking nature of the triangular air holes enforces a stable linear polarization perpendicular to the long edge of the triangle. This work demonstrates that high-beam-quality blue PCSELs can be achieved using non-regrowth fabrication processes with simple hole geometry, paving the way for high-performance blue laser sources.
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- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
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Simulation study of a low-threshold, high-efficiency 1.55 µm InP PCSEL enabled by a bottom metal-capped DBR, peripheral DBRs, and a shifted triple-hole photonic crystal
OpenAlex · Applied Optics · 发表 2026-05-22 · 收录 2026-06-15 · 相关度 29.5
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中文摘要
1.55 µm 光子晶体面发射激光器（PCSEL）因具有眼安全性和低光纤损耗，对光通信和 LiDAR 应用极具吸引力。然而，其性能受到阈值增益与斜率效率之间权衡的限制，也受到传统分布式布拉格反射器（DBR）结构的反射率和相位控制能力的限制。在本工作中，据我们所知，我们对一种新型 InP 基 PCSEL 设计进行了理论和数值研究。具体而言，金属封盖 DBR 由三对 SiO₂/TiO₂ 层和一层 Au 构成，可在提供高反射率的同时大幅降低制造复杂度。此外，在光子晶体（PC）区域周围引入 DBR，以抑制面内损耗并增强激光模式的反馈。进一步地，移位三孔光子晶体能够灵活控制面内和垂直耦合强度，从而实现阈值增益与斜率效率之间的优化平衡。采用传输矩阵法和三维耦合波理论（3D-CWT）对器件性能进行评估。结果表明，优化后的结构具有 16 cm⁻¹ 的低激光振荡阈值增益及相应的 76 cm⁻¹ 阈值材料增益，同时具有 0.18 W/A 的高斜率效率，为工作于 1.55 µm 的高性能 InP 基 PCSEL 提供了一种有前景的理论设计策略。
英文摘要
Photonic-crystal surface-emitting lasers (PCSELs) at 1.55 µm are highly attractive for optical communication and LiDAR applications owing to eye safety and low fiber loss. However, their performance is limited by the trade-off between threshold gain and slope efficiency, as well as by the reflectivity and phase control of conventional distributed Bragg reflector (DBR) structures. In this work, we present a theoretical and numerical investigation of a novel InP-based PCSEL design, to our knowledge. Specifically, the metal-capped DBR is composed of three pairs of SiO 2 /TiO 2 layers and an Au layer, providing high reflectivity while substantially reducing fabrication complexity. In addition, DBRs surrounding the photonic crystal (PC) region are introduced to suppress in-plane loss and enhance the feedback of the lasing mode. Furthermore, a shifted triple-hole photonic crystal enables flexible control of the in-plane and vertical coupling strengths, achieving an optimized balance between threshold gain and slope efficiency. The device performance is evaluated using the transfer-matrix method and three-dimensional coupled-wave theory (3D-CWT). As a result, the optimized structure exhibits a low threshold gain for lasing oscillation of 16cm −1 and a corresponding threshold material gain of 76cm −1, together with a high slope efficiency of 0.18 W/A, providing a promising theoretical design strategy for high-performance InP-based PCSELs operating at 1.55 µm.
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- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：CWT。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Learning light scattering from operator parameter spaces to Galerkin-consistent solution spaces
arXiv · 发表 2026-06-11 · 收录 2026-06-13 · 相关度 10.9
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中文摘要
高效且可泛化的全波仿真对于纳米光子学分析和逆向设计至关重要，但现有方法面临数值求解器计算成本高与神经算子模型对复杂光散射泛化能力有限之间的权衡。在这里，我们提出 FEMONet，这是一种有限元约束的算子学习框架，可从算子参数空间到 Galerkin 一致解空间学习光散射。算子参数空间编码定义波动方程问题的物理实体，而变分弱形式将该空间与坐标空间和物理解空间相连接。与算子学习网络集成后，FEMONet 将经典求解器从孤立的问题实例扩展到参数化散射算子。据我们所知，FEMONet 是首个针对复值光散射的 Galerkin 一致算子学习框架，其基础是控制矢量波动方程的变分弱形式。有限元离散化将空间导数吸收到组装的刚度矩阵和载荷向量中，从物理损失中移除了神经网络输出的基于坐标的导数，并提高了训练效率。通过预测有限元展开系数而非无约束的场值，Galerkin 一致公式保留了兼容的试探空间和测试空间，在介电、金属、阵列、等离激元和三维纳米光子结构中实现了高精度、稳定训练和泛化。
英文摘要
Efficient and generalizable full-wave simulation is essential for nanophotonic analysis and inverse design, yet existing methods face a tradeoff between the high computational cost of numerical solvers and the limited generalizability of neural operator models for complex optical scattering. Here, we introduce FEMONet, a finite-element-constrained operator-learning framework that learns light scattering from an operator parameter space to a Galerkin-consistent solution space. The operator parameter space encodes the physical entities defining a wave-equation problem, while the variational weak form links this space to the coordinate and physical solution spaces. Integrated with operator-learning networks, FEMONet extends classical solvers from isolated problem instances to parameterized scattering operators. To our knowledge, FEMONet represents the first Galerkin-consistent operator-learning framework for complex-valued optical scattering, grounded in the variational weak form of the governing vector wave equations. Finite-element discretization absorbs spatial derivatives into assembled stiffness matrices and load vectors, removing coordinate-based derivatives of the neural-network output from the physics loss and improving training efficiency. By predicting finite-element expansion coefficients rather than unconstrained field values, the Galerkin-consistent formulation preserves compatible trial and test spaces, achieving high accuracy, stable training, and generalization across dielectric, metallic, arrayed, plasmonic, and three-dimensional nanophotonic structures.
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- 主线关联：更偏nanophotonics / FEM，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：FEM / AI 代理模型/逆向设计。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Size scaling law for radiation losses of modes in photonic crystal surface emitting devices
OpenAlex · Optics Express · 发表 2026-06-01 · 收录 2026-06-13 · 相关度 25.0
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中文摘要
光子晶体面发射激光器（PCSEL）因能够产生超高功率、低发散角的激光束而受到广泛关注。这是因为它们能够以比传统半导体激光器大数个数量级的模式体积支持高功率单模激光振荡。PCSEL 有限的横向尺寸是限制其激光模式体积并进而限制其输出功率的主要因素。我们证明，总腔损耗 α = α⊥ + α∥ 与器件尺寸 L 之间的标度关系为：表面辐射损耗按 α⊥ ∼ O(L⁻²) 标度，而边缘辐射损耗按 α∥ ∼ O(L⁻³) 标度。这两种标度关系均可由能带图复频率 ω(k) 的二阶展开来解释。我们的结果为设计大面积类 PCSEL 器件时估算尺寸效应提供了指导。
英文摘要
Photonic-crystal surface-emitting lasers (PCSELs) have garnered significant attention due to their ability to generate laser beams with ultra-high power and low divergence. This is because they support high-power single-mode lasing with volumes orders of magnitude larger than those of conventional semiconductor lasers. The finite lateral size in a PCSEL is a primary factor limiting its lasing mode volume and, consequently, its output power. We demonstrate that the scaling relation between the total cavity loss α = α ⊥ + α ∥ and the device size L is such that the surface radiation loss scales as α ⊥ ∼ O ( L −2 ), while the edge radiation loss α ∥ ∼ O ( L −3 ). Both scaling relations can be explained by the second-order expansions of the complex frequency ω ( k ) of the band diagram. Our results provide a guideline for estimating the size effect when designing large-area PCSEL-like devices.
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- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
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- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 mode volume。
High-Power Terahertz Photonic Crystal Surface-Emitting Laser with High Beam Quality
Semantic Scholar · Photonics · 发表 2024-01-01 · 收录 2026-06-13 · 相关度 48.5
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中文摘要
光子晶体面发射激光器（PCSEL）因具有较小的远场发散角和较高的输出功率而备受关注。在此，我们通过优化吸收边界条件并引入对称分布的电极，报道了一种具有高光束质量的高功率太赫兹（THz）光子晶体激光器。该器件实现了 3.4 THz 的单模表面发射，最大峰值输出功率为 50 mW。同时，还获得了具有 C6 对称性的高度对称远场图案和较小的发散角。该器件实现了稳定单模运行、高光束质量和高输出功率的集成，这对于实际应用可能具有重要意义。
英文摘要
The photonic crystal surface-emitting laser (PCSEL) has attracted much attention due to the advantages of a small far-field divergence angle and high output power. Here, we report a high-power terahertz (THz) photonic crystal laser with high beam quality through the optimization of the absorption boundary condition and the introduction of the symmetrically distributed electrodes. Single-mode surface emission at 3.4 THz with the maximum peak output power of 50 mW is demonstrated. Meanwhile, a high symmetric far-field pattern with C6 symmetry and a small divergence angle is achieved. In this device, the integration of the stable single-mode operation, high beam quality and high output power is realized, which may have great significance for practical applications.
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- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
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- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 far field / divergence angle。
Design of double-lattice GaN-PCSEL based on triangular and circular holes.
Semantic Scholar · Optics Express · 发表 2023-01-01 · 收录 2026-06-13 · 相关度 52.3
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中文摘要
我们从理论上设计了一种基于三角形孔和圆形孔的双晶格光子晶体面发射激光器（PCSEL）。在该设计中，首次提出采用多孔 GaN 作为 GaN-PCSEL 的包层；多孔 GaN 具有较低折射率，并可与 GaN 实现高质量、无应力的同质外延。研究采用了有限差分时域（FDTD）、平面波展开（PWE）和严格耦合波分析（RCWA）方法。我们的模拟在保持低阈值增益的同时，实现了高达 50 cm⁻¹ 的辐射常数和超过 1 W/A 的斜率效率。我们系统研究了填充因子、蚀刻深度和孔位移对 PCSEL 性能的影响。研究结果表明，增大填充因子可提高辐射常数和斜率效率。非对称孔图案……
英文摘要
We have theoretically designed a double-lattice photonic crystal surface-emitting laser (PCSEL) based on triangular and circular holes. In the design, porous-GaN which has the properties of lower refractive index and high quality stress-free homo-epitaxy with GaN, was first proposed to be the cladding layer for GaN-PCSEL. The finite difference-time domain (FDTD), the plane wave expansion (PWE), and the rigorous coupled-wave analysis (RCWA) method were employed in the investigation. Our simulations achieved a radiation constant of up to 50 cm-1 and a slope efficiency of more than 1 W/A while maintaining a low threshold gain. We conducted a systematic study on the effects of the filling factor, etching depth, and holes shift, on the performance of the PCSEL. The findings indicate that increasing the filling factor improves the radiation constant and slope efficiency. Asymmetric hole patter
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- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：CWT / FDTD。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Coherent Free-Space Optical Communication at the C-Band Using InP-Based Photonic-Crystal Surface-emitting Laser
Semantic Scholar · European Conference on Optical Communication · 发表 2025-01-01 · 收录 2026-06-12 · 相关度 42.3
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中文摘要
我们首次展示了使用基于 InP 的光子晶体面发射激光器（PCSEL）在 C 波段进行相干通信，实现了 1-Gb/s 自由空间光（FSO）传输，链路预算超过 67 dB。这突显了基于 InP 的 PCSELs 在无需光纤放大器的标准 C 波段空间通信中的潜力。©2025 作者
英文摘要
We present the first demonstration of coherent communication at the C-band using an InP-based photonic-crystal surface-emitting laser (PCSEL), achieving 1-Gb/s free-space optical (FSO) transmission with a link budget exceeding 67 dB. This highlights the potential of InP-based PCSELs for fibre-amplifier-free standard C-band space communication. ©2025 The Author(s)
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为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Design of high-slope-efficiency quantum dot photonic crystal surface-emitting lasers with metal reflector
OpenAlex · 发表 2026-06-05 · 收录 2026-06-09 · 相关度 38.7
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中文摘要
我们提出了一种利用金属反射镜的量子点光子晶体面发射激光器（QD-PCSEL）设计。通过调节 p 包层厚度、引入氧化物层并使用 GaInP 作为 p 包层，QD-PCSEL 的斜率效率得到大幅增强。采用三维有限差分时域方法研究了 p 包层厚度和光子晶体（PC）层对斜率效率的影响。仿真结果表明，在填充因子为 22%、PC 层厚度为 420 nm、p 包层厚度为 1.3 μm 时，所设计的 QD-PCSEL 实现了 267 mW/A 的斜率效率。与已报道的实验结果相比，这代表了约 20 倍的提升。
英文摘要
We present the design of a quantum dot photonic crystal surface-emitting laser (QD-PCSEL) utilizing a metal reflector. By adjusting the p-cladding layer thickness, incorporating an oxide layer, and using GaInP as the p-cladding layer, the slope efficiency of the QD-PCSEL is greatly enhanced. The influence of the p-cladding layer thickness and the photonic crystal (PC) layer on the slope efficiency was investigated using the three-dimensional finite-difference time-domain method. Simulation results demonstrate that with a fill factor of 22%, a PC layer thickness of 420 nm, and a p-cladding layer thickness of 1.3 μm, the designed QD-PCSEL achieves a slope efficiency of 267 mW/A. This represents an approximately 20-fold improvement compared to reported experimental results.
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为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Steerable surface emitting laser design based on a line of bound states in the continuum
OpenAlex · 发表 2026-05-28 · 收录 2026-06-09 · 相关度 20.6
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中文摘要
传统光子晶体面发射激光器（PCSEL）依赖于孤立的准连续谱中束缚态（q-BIC），这些态通常位于布里渊区中心，并提供高方向性和高质量因子。然而，由于其所依赖的 q-BIC 具有孤立性质，PCSEL 在需要连续可调性的应用中受到根本限制，需要构建许多不同的 PCSEL，并通过开关它们来实现这种可调性。在这里，我们引入一种新的腔体几何结构，该结构使用一种新型的偏振和角度选择性 Bragg 反射器，来发展一种具有连续的连续谱中束缚态线的面发射激光器。所得色散允许在宽波矢范围内实现高 Q 激射态，并具有双光束发射的潜力，其角分离可通过调节注入量子阱增益介质的温度和注入电流来调谐。数值模拟证实，该构型产生高质量因子，并由于其较低的谐振态密度而支持大面积单模工作。该方法不仅将实现连续角度光束控制，还与现有制备方法兼容。我们的研究代表了克服基于孤立 q-BIC 器件局限性的重要一步，并为集成光子学中的动态和可调谐光束转向开辟了新的可能性。致谢：SNL 由 NTESS 根据 DOE NNSA 合同 DE-NA0003525 管理和运营。
英文摘要
Traditional photonic crystal surface-emitting lasers (PCSELs) rely on isolated quasi-bound states in the continuum (q-BIC) that are generally at the center of the Brillouin zone and which offer high directionality and quality factors. However, due to the isolated nature of the q-BICs they rely on, PCSELs are fundamentally limited in applications that demand continuous tunability, requiring the construction of many different PCSELs that are switched on and off to achieve such tunability. Here, we introduce a new cavity geometry that uses a novel polarization- and angle-selective Bragg reflector to develop a surface emitting laser that features a continuous line of bound states in the continuum. The resulting dispersion allows for high-Q lasing states across a broad wavevector range, with the potential for twin-beam emission whose angular separation can be tuned by adjusting the temperature and injection current into the quantum well gain medium. Numerical simulations confirm that this configuration yields a high-quality factor and supports single-mode operation over large areas due to its reduced density of resonances. The approach will not only enable continuous angular beam control but also offers compatibility with existing fabrication methods. Our study represents a significant step toward overcoming the limitations of isolated-q-BIC-based devices and opens new possibilities for dynamic and tunable beam-steering in integrated photonics. Acknowledgement: SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.
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- 主线关联：更偏photonics / photonic crystal / Q factor，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quality factor / quantum well。
Low-threshold GaN surface emitting lasers: A comparative study of circular grating and photonic crystal designs
OpenAlex · Journal of Semiconductors · 发表 2026-05-01 · 收录 2026-06-09 · 相关度 25.7
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中文摘要
1674-4926/47/5/052504 摘要 我们展示了两种无需外延再生长制备的 GaN 基面发射激光器（SEL）在室温下的脉冲激射。我们对圆形光栅（CGSEL）和光子晶体（PCSEL）设计进行了直接比较。这些器件通过将光子结构直接刻蚀到 p-GaN 包层中，并利用图案化的氧化铟锡（ITO）顶部接触来实现。两种设计在脉冲电流注入下均在 438 nm 附近表现出激射。包含中心缺陷的 CGSEL 通过耦合到带隙缺陷模，实现了低阈值电流密度（ 2 ）和小发散角（≈0.15°）。相比之下，PCSEL 显示出更高的阈值电流密度，并在 1D 带边模式上激射，从而产生十字形远场图样。这些结果证实了无再生长方法是实现可制造 GaN SELs 的可行途径。关键的是，该比较研究确定 CGSEL 缺陷模设计是在低限制外延结构中实现高性能激射的更稳健路径。
英文摘要
1674-4926/47/5/052504 Abstract We demonstrate room-temperature pulsed lasing of two types of GaN-based surface emitting lasers (SEL) fabricated without epitaxial regrowth. We present a direct comparison between a circular grating (CGSEL) and a photonic crystal (PCSEL) design. The devices are realized by etching the photonic structures directly into the p-GaN cladding, and utilizing a patterned indium tin oxide (ITO) top contact. Both designs exhibit lasing near 438 nm under pulsed current injection. The CGSEL, incorporating a central defect, achieves a low threshold current density ( 2 ) and a small divergence angle (≈0.15°) by coupling to a bandgap defect mode. In contrast, the PCSEL shows a higher threshold current density and lases on a 1D band-edge mode, resulting in a cross-shaped far-field pattern. These results confirm the regrowth-free method as a viable route for manufacturable GaN SELs. Crucially, the comparative study identifies the CGSEL defect-mode design as a more robust path toward high-performance lasing in low-confinement epitaxial structures.
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为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 far field / divergence angle。
A synergistic approach to optical modeling of PCSELs through rigorous methods and the coupled-wave theory
OpenAlex · AIP Advances · 发表 2026-05-01 · 收录 2026-06-09 · 相关度 21.1
查看中英文摘要与相关性说明
中文摘要
目前已发展出多种用于光子晶体面发射激光器（PCSEL）光学建模的数值和半解析方法。然而，用于比较这些方法的预测能力并确定其各自适用范围的系统性框架，在很大程度上仍未得到探索。在本研究中，我们提出了一种比较方法，在耦合波理论框架内对四种代表性方法——包括严格数值方法和基于有效折射率的方法——进行分析和部分混合。以单晶格和双晶格 PCSEL 为代表性模型，我们证明，该方法不仅揭示了严格方法与耦合波理论框架的预测之间的根本差异，还能够捕捉与激光工作相关的连续域束缚态的泄漏相和对称性破缺相。
英文摘要
A wide range of numerical and semi-analytical approaches has been developed for optical modeling of photonic-crystal surface-emitting lasers (PCSELs). However, a systematic framework for comparing their predictive capabilities and identifying their respective validity limits remains largely unexplored. In this study, we introduce a comparative methodology in which four representative methods—including rigorous numerical and effective-index-based approaches—are analyzed and partially hybridized within a coupled-wave-theory framework. Using single- and double-lattice PCSELs as representative models, we demonstrate that this approach not only reveals fundamental differences between predictions of rigorous methods and the coupled-wave-theory framework but also captures leaky and symmetry-broken phases of bound states in the continuum relevant for laser operation.
为什么与你有关
为什么与你有关：
- 主线关联：更偏photonics / photonic crystal / CWT，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：CWT。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Inverse Design of Photonic Crystal Lasers Through Automatic Differentiation Optimization
OpenAlex · IEEE Journal of Selected Topics in Quantum Electronics · 发表 2026-04-23 · 收录 2026-06-09 · 相关度 44.9
查看中英文摘要与相关性说明
中文摘要
（嵌入式）PhC 谐振腔激光器的行为与晶胞轮廓密不可分。因此，遗憾的是，设计过程中的绝大部分工作依赖于对介电常数分布进行审慎的人工选择。这样做的缺点在于，它舍弃了与目标函数（激光器的物理响应）相关的信息。我们采用基于梯度的方法来解决这一问题，将计算设计任务分为二维光子本征模特征值问题（建模）和计算图（梯度传播）之间的两个步骤：（i）通过仿真进行前向传播，以预测光子晶体面发射激光器（PCSEL）的行为（远场和模式品质因数）；（ii）进行反向传播，计算用户定义的代价函数的梯度，以更新晶胞设计。在远场和腔内场性能指标方面，该方法的性能均优于当前用于大规模 PCSEL 的晶胞设计。
英文摘要
The behavior of (embedded) PhC resonator lasers is inextricably linked to the unit cell profile. Hence, an overwhelming fraction of the design process unfortunately relies on the judicious manual choice of the permittivity profile. This is disadvantageous for the fact that this throws away information regarding the objective function (the physical response of the laser). We remedy this by employing gradient-based protocols that split the computational design task into two steps—between a 2D eigenvalue problem for the photonic eigenmodes (modeling) and the computational graph (gradient-propagation): (i) a forward passage through the simulation to predict the photonic-crystal surface-emitting laser (PCSEL) behavior (far-field and mode quality factors), and (ii) a backpropagation step where the gradient of a (user) defined cost function is computed to update the unit cell design. The performance of this method exceeds contemporary unit cell designs for large-scale PCSELs in both far-field and intracavity field performance metrics.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：AI 代理模型/逆向设计。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 far field。
POST: Photonic Swin Transformer for Automated and Efficient Prediction of PCSEL
arXiv · 发表 2025-07-02 · 收录 2026-06-09 · 相关度 32.9
查看中英文摘要与相关性说明
中文摘要
本工作基于视觉 Transformer（ViT）方法设计了一种名为 POST 的模型。对于单晶格、双晶格乃至三晶格，以及各种非圆形复杂孔结构，POST 无需人工干预即可快速、准确地预测光子晶体面发射激光器（PCSEL）中光子晶体层的多种光学性质，可作为光场仿真的综合代理模型。在对 PCSEL 的品质因子（Q）和面发射效率（SE）进行预测时，决定系数 R² 分别达到 0.909 和 0.779。此外，该模型每秒可完成近 5,000 次预测，显著降低了仿真成本。POST 预测的精度和速度为未来涉及数十个参数的超复杂模型参数调优奠定了坚实基础。它还能够迅速满足设计
英文摘要
This work designs a model named POST based on the Vision Transformer (ViT) approach. Across single, double, and even triple lattices, as well as various non-circular complex hole structures, POST enables prediction of multiple optical properties of photonic crystal layers in Photonic Crystal Surface Emitting Lasers (PCSELs) with high speed and accuracy, without requiring manual intervention, which serves as a comprehensive surrogate for the optical field simulation. In the predictions of Quality Factor (Q) and Surface-emitting Efficiency (SE) for PCSEL, the R-squared values reach 0.909 and 0.779, respectively. Additionally, it achieves nearly 5,000 predictions per second, significantly lowering simulation costs. The precision and speed of POST predictions lay a solid foundation for future ultra-complex model parameter tuning involving dozens of parameters. It can also swiftly meets desig
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：CWT / AI 代理模型/逆向设计。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quality factor。
Power and brightness scaling in coherently coupled PCSEL arrays
OpenAlex · 发表 2025-05-30 · 收录 2026-06-09 · 相关度 44.0
查看中英文摘要与相关性说明
中文摘要
我们报道了一种新型相干光子晶体表面发射激光器（PCSEL）阵列设计，通过在横向上无源耦合紧凑型光子晶体腔实现。实验表征结果表明，我们在 InGaAs/GaAs 多量子阱（MQW）平台上制备的激光器阵列具有高光束质量和高相干性。
英文摘要
We report a novel design of coherent photonic crystal surface-emitting laser (PCSEL) array by passively coupling compact photonic crystal cavities in the lateral directions. Experimental characterization results show high beam quality and coherency from our fabricated laser array on InGaAs/GaAs multiple quantum well (MQW) platform.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quantum well。
Towards Efficient PCSEL Design: A Fully AI-driven Approach
arXiv · 发表 2025-03-14 · 收录 2026-06-09 · 相关度 32.7
查看中英文摘要与相关性说明
中文摘要
我们提出了一种完全由 AI 驱动的光子晶体（PhC）设计框架，旨在实现光子晶体面发射激光器（PCSEL）的高效率。通过将 PhC 结构离散为网格，并利用二维高斯曲面的截面表示孔的边缘，我们实现了具有高自由度且便于制造的孔结构设计。耦合波理论（CWT）通过评估 PhC 设计的面发射效率（SEE）和品质因子（Q）生成数据集，多层神经网络（NN）则从这些设计中学习并提取关键特征。最后，采用黑箱优化（BBO）对光子晶体结构进行微调，从而实现完全由 AI 驱动的设计流程。该模型实现了较高的预测精度，其中 SEE 的 Pearson 相关系数为 0.780，经对数变换的
英文摘要
We present an fully AI-driven design framework for photonic crystals (PhCs), engineered to achieve high efficiency in photonic crystal surface-emitting lasers (PCSELs). By discretizing the PhC structure into a grid, where the edges of the holes are represented by the cross-sections of two-dimensional Gaussian surfaces, we achieve high-degree-of-freedom and fabrication-friendly hole design. Coupled-wave theory (CWT) generates a dataset by evaluating surface-emitting efficiency ($SEE$) and quality factor ($Q$) of PhC designs, while a multi-layered neural network (NN) learns and extracts essential features from these designs. Finally, black-box optimization (BBO) is employed to fine-tune the photonic crystal structure, enabling a fully AI-driven design process. The model achieves high prediction accuracy, with Pearson correlation coefficients of 0.780 for $SEE$ and 0.887 for the log-transfo
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：CWT / FDTD。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quality factor。
High Brightness Coherent Photonic Crystal Surface-Emitting Laser Arrays
Semantic Scholar · International Semiconductor Laser Conference · 发表 2024-01-01 · 收录 2026-06-09 · 相关度 44.3
查看中英文摘要与相关性说明
中文摘要
我们报道了一种新型相干光子晶体面发射激光器（PCSEL）阵列设计，该设计通过在横向上无源耦合紧凑型光子晶体腔来实现。实验表征结果表明，我们在 InGaAs/GaAs 多量子阱（MQW）平台上制造的激光器阵列具有高光束质量和高相干性。
英文摘要
We report a novel design of coherent photonic crystal surface-emitting laser (PCSEL) array by passively coupling compact photonic crystal cavities in the lateral directions. Experimental characterization results show high beam quality and coherency from our fabricated laser array on InGaAs/GaAs multiple quantum well (MQW) platform.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quantum well。
Monolithic Integration of Metasurface with Photonic-Crystal Surface-Emitting Laser (PCSEL) for Beam Manipulation in Free Space Optical Communication
Crossref · Optical Fiber Communication Conference (OFC) 2026 · 发表 2026-01-01 · 收录 2026-06-03 · 相关度 39.5
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中文摘要
我们制造了与光子晶体面发射激光器（PCSEL）单片集成的超表面。该超表面被设计用于在特定衍射角产生左旋和右旋圆偏振。实验结果表明，每个偏振信道实现了 1.88 Gbit/s 的自由空间传输。
英文摘要
A monolithically integrated metasurface with photonic-crystal-surface-emitting-laser (PCSEL) was fabricated. The metasurface was designed to generate left- and right-handed-circular-polarizations at specific diffraction angles. Experimental results show that 1.88-Gbit/s per polarization channel free-space transmission is achieved.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
PCSEL modeling and design tool for photonic crystal surface-emitting lasers
Crossref · Physics and Simulation of Optoelectronic Devices XXXIII · 发表 2025-03-19 · 收录 2026-05-29 · 相关度 21.7
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中文摘要
光子晶体面发射激光器（PCSELs）是一种新型半导体激光器设计，其特点是来自光子晶体（PC）共振的面内光反馈。PCSEL 腔中的激射模式可以被设计为在动量空间的 Γ 点运行，并且可以形成低光束发散角的向上发射。这种正交的电注入和光反馈设计为光学腔设计提供了巨大的自由度。一方面，已经从直径为 3 mm 的单孔径 PCSEL 器件中展示了功率超过 50 W、亮度超过 1 GW cm−2 sr−1 的高功率连续波（CW）PCSELs。为支持这种新型半导体激光器的发展，高功率单模 PCSELs 考虑了耦合的电学/光学设计。光学晶格的影响以及高阶模式的抑制对于维持大孔径 PCSELs 的单模运行至关重要。引入异质结构光子晶体腔可以实现对面内腔损耗的控制以及 PCSEL 阵列的耦合。还将讨论异质结构的优化，以实现最佳载流子注入和模式选择。
英文摘要
Photonic Crystal Surface-Emitting Lasers (PCSELs) are a new type of semiconductor laser design which features in-plane optical feedback from Photonic Crystal (PC) resonances. The lasing mode in a PCSEL cavity can be designed to operate at the Γ point of momentum space, and an upward emission with low beam divergence can be formed. Such orthogonal electrical injection and optical feedback design offers huge freedom of optical cavity design. On the one hand, high-power Continuous-Wave (CW) PCSELs with power exceeding 50W and brightness over 1GW cm−2 sr−1 have been demonstrated from a 3mm diameter single aperture PCSEL device. To support the development of this new type of semiconductor lasers, coupled electrical/optical designs are considered for high power single mode PCSELs. The impact of the optical lattice and suppression of higher order mode is critical in maintaining single mode operation for large aperture PCSELs. The incorporation of heterostructure photonic crystal cavities can lead to the control of in-plane cavity loss and the coupling of PCSEL arrays. Optimization of heterostructures will also be discussed for the optimal carrier injection and mode selection.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Machine-learning-empowered FDTD/FEM simulations for predictive solar energy absorption in plasmonic metamaterial nanocavity arrays
Crossref · Nanoscale · 发表 2025-01-01 · 收录 2026-05-29 · 相关度 10.1
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中文摘要
由机器学习增强的 FDTD/FEM 模拟在用于太阳能收集的 TiO 2 /TiN 等离激元纳米腔中实现了 95.44% 的光吸收效率。
英文摘要
FDTD/FEM simulations, strengthened by machine learning, achieve 95.44% optical absorption efficiency in TiO 2 /TiN plasmonic nanocavities for solar energy harvesting.
为什么与你有关
为什么与你有关：
- 主线关联：更偏nanocavity / FDTD / FEM，可作为 PCSEL 周边器件物理或数值方法补充。
- 可用线索：FDTD / FEM / AI 代理模型/逆向设计。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
Laterally coupled photonic crystal surface emitting laser arrays
Crossref · Journal of Applied Physics · 发表 2024-05-17 · 收录 2026-05-29 · 相关度 31.8
查看中英文摘要与相关性说明
中文摘要
我们提出并研究了一种基于横向耦合光子晶体面发射激光器（PCSELs）的新型相干激光器阵列设计。作为一种新型半导体激光技术，PCSELs 在平面腔中具有场限制，并沿表面法线方向发射激光束。通过利用异质结构光子晶体设计来工程化 PCSELs 之间的横向耦合，我们可以实现 PCSELs 阵列的相干工作。在本文中，我们展示了一种无源耦合 PCSEL 阵列设计的相干工作。我们在目标波长为 1040 nm 的 GaAs 基量子阱异质结构上制备了 PCSEL 阵列器件。实验结果表明，2×2 PCSEL 阵列具有 0.14–0.22 nm 的光谱线宽。通过自干涉实验表征了光束合成性能。PCSEL 阵列与单个 PCSEL 器件之间具有相似的相干性
英文摘要
We propose and investigate a novel coherent laser array design based on laterally coupled photonic crystal surface-emitting lasers (PCSELs). As a new type of semiconductor laser technology, PCSELs have field confinement in a planar cavity and laser beam emission in the surface normal direction. By engineering lateral couplings between PCSELs with heterostructure photonic crystal designs, we can achieve coherent operations from an array of PCSELs. In this paper, we demonstrate coherent operation from a passively coupled PCSEL array design. We fabricated PCSEL array devices on a GaAs-based quantum well heterostructure at a target wavelength of 1040 nm. Experimental results show that the 2-by-2 PCSEL arrays have spectral linewidth of 0.14–0.22 nm. Beam combining performance was characterized by self-interference experiments. Similar coherency between the PCSEL array and single PCSEL device
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：适合沉淀成验证指标或参数先验，尤其是 quantum well。
Compact Coherent Photonic Crystal Surface-Emitting Laser Arrays
Crossref · CLEO 2024 · 发表 2024-01-01 · 收录 2026-05-29 · 相关度 40.2
查看中英文摘要与相关性说明
中文摘要
我们报道了一种采用无源耦合 PCSEL 阵列的新型相干光束合成设计。我们所制造的 GaAs 基阵列的实验结果显示出高光束质量、窄线宽和高相干性。
英文摘要
We report a novel coherent beam combining design with passively coupled PCSEL array. Experimental results of our fabricated GaAs-based arrays show high beam quality, linewidth, and coherency.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。
29-W Continuous-Wave Operation of Photonic-Crystal Surface-Emitting Laser (PCSEL)
Crossref · 2021 27th International Semiconductor Laser Conference (ISLC) · 发表 2021-10-10 · 收录 2026-05-29 · 相关度 38.0
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中文摘要
我们展示了具有双晶格结构和直径为 2 mm 的圆形谐振腔的光子晶体面发射激光器在 29 W 功率下的连续波运行。即使在输出功率达到 29 W 时，也成功实现了极窄的发散角（<0.4°）运行。
英文摘要
We demonstrate 29-W continuous-wave operation of a photonic-crystal surface-emitting laser with a double lattice structure and a circular resonator diameter of 2 mm. A very narrow divergence angle operation (<0.4°) has been successfully achieved even at 29 W of output power.
为什么与你有关
为什么与你有关：
- 主线关联：直接服务 PCSEL 方向，优先看结构参数、耦合机制、出光/远场和验证口径。
- 可用线索：先看是否能抽出结构参数、指标定义或仿真设置。
- 可转化内容：先判断能否变成一个仿真 case、baseline、验证指标或参数先验。