2026-07-25

OpenAlex · IEEE Journal of Selected Topics in Quantum Electronics · 2026-06-15 · Takuya Inoue, Masahiro Yoshida, Kenji Ishizaki, Menaka De Zoysa · 新论文 2026-07-22 · 相关度 16.8

英文原题Carrier-Induced Mode Redistribution Enabling Scalable Single-Mode Lasing in Ultra-Large-Area Photonic-Crystal Surface-Emitting Lasers

中文摘要光子晶体面发射激光器（PCSEL）凭借其在超大发射面积上实现相干激光振荡的能力，正作为面向多种应用的下一代高功率光源而受到关注。为了使超大面积 PCSEL 在远高于激射阈值的条件下保持稳定的单模激射，必须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。在本文中，我们在考虑载流子–光子相互作用的情况下，对超大面积（3～10 mm）PCSEL 的激射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使超大面积单模振荡成为可能的物理机制。我们揭示，由于载流子诱导的折射率变化以及由此产生的弱模式带隙效应，大面积 PCSEL 内部最初集中于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时，随着注入电流增加，光子分布会变得越来越均匀，并呈现出与注入电流分布相似的形态。这种模式重分布（或去局域化）可抑制空间烧孔，并有利于即使在高电流注入下仍维持单模振荡。此外，通过调整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 激射特性的认识，并为未来通过实验展示千瓦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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- 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。

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OpenAlex · Applied Optics · 2026-05-22 · Siyu Chen, Jingwei Chen, Xingyu Liu, Zhiyuan Jiang · 新论文 2026-06-15 · 相关度 29.5

英文原题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

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关系的限制，同时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制约。在本研究中，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 层和一个 Au 层构成，能够在提供高反射率的同时显著降低制造复杂度。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射模式的反馈。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，从而在阈值增益与斜率效率之间实现优化平衡。我们采用传输矩阵法和三维耦合波理论（3D-CWT）评估器件性能。结果表明，优化后的结构具有低至 16 cm⁻¹ 的激光振荡阈值增益和相应为 76 cm⁻¹ 的阈值材料增益，同时具有高达 0.18 W/A 的斜率效率，从而为工作于 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.

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。
- 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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

OpenAlex · AIP Advances · 2026-05-01 · A. Bisianov, A. Waag · 新论文 2026-06-09 · 相关度 21.1

英文原题A synergistic approach to optical modeling of PCSELs through rigorous methods and the coupled-wave theory

中文摘要针对光子晶体面发射激光器（PCSEL）的光学建模，人们已经开发出多种数值和半解析方法。然而，用于系统比较这些方法的预测能力并确定其各自适用范围的框架仍基本未得到探索。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结果之间的根本差异，还能捕捉与激光运行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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

OpenAlex · IEEE Journal of Selected Topics in Quantum Electronics · 2026-06-15 · Shota Koga, Takuya Inoue, Menaka De Zoysa, Susumu Noda · 新论文 2026-07-09 · 相关度 25.9

英文原题Three-Dimensional Coupled-Wave Analysis for Photonic-Crystal Surface-Emitting Lasers With External Optical Feedback

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。光子晶体设计的进展带来了光束扫描、高速调制和窄线宽运行等增强功能。作为进一步扩展 PCSEL 功能的一种有前景的方法，本文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，该方法可在传统半导体激光器中实现线宽压窄和调制带宽扩展。在本文中，我们开发了一种能够分析具有外部光反馈的 PCSEL 的数值方法，并基于这一框架对其激射特性进行了理论研究。首先，我们表明，激射模式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而形成，同时保持具有窄发散角的单横模运行。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运行，而通过控制反射相位还可以实现频率扫描运行。这些结果表明，外部光反馈能够为实现 PCSEL 的高级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.

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：适合沉淀成验证指标或参数先验，尤其是 divergence angle。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

OpenAlex · Optics Express · 2026-06-01 · Qingyuan Zhang, Ming Lyu, Jiang Hu, Qi Dai · 新论文 2026-06-13 · 相关度 25.0

英文原题Size scaling law for radiation losses of modes in photonic crystal surface emitting devices

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。这是因为它们支持高功率单模激射，其模式体积比传统半导体激光器大数个数量级。PCSEL 的有限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 之间的标度关系为：表面辐射损耗的标度为 α⊥ ∼ O(L⁻²)，而边缘辐射损耗的标度为 α∥ ∼ O(L⁻³)。这两种标度关系均可通过能带图中复频率 ω(k) 的二阶展开来解释。我们的研究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.

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 mode volume。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

OpenAlex · Applied Physics Letters · 2026-07-06 · Erin Raftery, Devon O. Lee, Daniel W. Pflug, Adrian Birge · 新论文 2026-07-09 · 相关度 33.5

英文原题Buried dielectric quasi-photonic-crystal surface-emitting lasers

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置介电结构来形成准光子晶体层。我们展示了埋置介电 QPCSEL 在室温下实现光泵浦激射，发射波长为 1.5 μm。QPCSEL 使用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。我们的埋置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留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.

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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

OpenAlex · Light Science & Applications · 2026-06-23 · Yifan Li, Wei Guo, Zihang Cui, Guozhen Liang · 新论文 2026-07-03 · 相关度 15.8

英文原题High-purity linearly polarized emission from a compact BIC laser

中文摘要连续域束缚态（BIC）可赋予光子晶体（PhC）激光器超高品质因子，从而实现低阈值。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，可通过各种对称性扰动来控制 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 激光器发射的高偏振纯度，一直是一项挑战。在此，我们开发了一种色散辅助偏振控制策略，用于对 PhC 激光器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，同时保持了单模运行和高光束质量。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.

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：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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

OpenAlex · Applied Physics Letters · 2026-06-15 · Zhiwei Sun, Bolin Zhou, Yuzhen Zheng, Yongchen Miao · 新论文 2026-06-19 · 相关度 40.0

英文原题Regrowth-free blue GaN-based photonic crystal surface-emitting lasers with triangular air holes

中文摘要我们报道了采用免再生长方法成功实现的室温蓝色 GaN 光子晶体面发射激光器（PCSEL）二极管。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射。该器件的阈值电流密度为 5.2 kA/cm²，并发射高斯形光束，测得的光束发散角低至 1.15 mrad（0.066°）。此外，三角形空气孔的对称性破缺特性使器件能够产生垂直于三角形长边的稳定线偏振。本研究表明，采用具有简单孔洞几何结构的免再生长制造工艺可以实现高光束质量的蓝色 PCSEL，为高性能蓝色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.

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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。