2026-08-02

OpenAlex · Laser & Photonics Review · 2026-07-23 · Tong Xu, Meixin Feng, Rui Xi, Xiaoqi Yu · 新论文 2026-07-26 · 相关度 32.5

英文原题3.2 W GaN‐Based Photonic‐Crystal Surface‐Emitting Laser

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（LiDAR）、自由空间通信和材料加工等高功率、高亮度应用中极具前景的光源。然而，将 PCSEL 拓展至蓝光波段仍面临挑战，主要原因是 GaN 基材料的折射率较低且波长较短，这会削弱光反馈，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 的无再生长瓦级 GaN 基 PCSEL。该器件实现了 4 kA/cm² 的阈值电流密度，并在室温下获得了 3.2 W 的峰值输出功率；据我们所知，这是迄今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，在未来的高亮度照明和显示应用中具有巨大潜力。

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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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 16.4

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）因能够在超大发射面积上实现相干激光振荡，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 在远高于激光阈值时仍保持稳定的单模激光振荡，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至关重要。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域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，光子分布会变得愈加均匀，并趋近于注入电流的分布。这种模式重分布（或离域化）抑制了空间烧孔效应，有利于即使在高电流注入下也维持单模振荡。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，例如使其呈高斯状分布。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，并为未来通过实验展示 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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- 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。
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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 25.5

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包括光束转向、高速调制和窄线宽工作在内的增强功能。作为进一步拓展 PCSEL 功能的一种极具前景的方法，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。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 Fabry–Pérot 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，外部光反馈可以为实现 PCSEL 的先进功能提供一种有效方法。

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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- 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。

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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。这是因为它们能够支持高功率单模激光振荡，其模式体积比传统半导体激光器大若干数量级。PCSEL 的有限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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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。

Crossref · Optical Fiber Communication Conference (OFC) 2026 · 2026-01-01 · Yun-Han Chang, Wen-Chien Miao, Fu-He Hsiao, Yuan-Zeng Lin · 新论文 2026-06-03 · 相关度 39.5

英文原题Monolithic Integration of Metasurface with Photonic-Crystal Surface-Emitting Laser (PCSEL) for Beam Manipulation in Free Space Optical Communication

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。该超表面被设计为在特定衍射角产生左旋和右旋圆偏振光。实验结果表明，每个偏振通道实现了 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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

Crossref · 2021 27th International Semiconductor Laser Conference (ISLC) · 2021-10-10 · Shumpei Katsuno, Masahiro Yoshida, Koki Izumi, Takuya Inoue · 新论文 2026-05-29 · 相关度 38.0

英文原题29-W Continuous-Wave Operation of Photonic-Crystal Surface-Emitting Laser (PCSEL)

中文摘要我们展示了采用双晶格结构、圆形谐振器直径为 2 mm 的光子晶体面发射激光器实现 29 W 连续波工作。即使在输出功率达到 29 W 时，也成功实现了非常窄的发散角（<0.4°）。

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 (&#x003C;0.4&#x00B0;) 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。

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 39.6

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无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确保了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无再生长制造工艺可以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.

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。

Crossref · CLEO 2024 · 2024-01-01 · Chhabindra Gautam, Mingsen Pan, Yudong Chen, Thomas J. Rotter · 新论文 2026-05-29 · 相关度 40.2

英文原题Compact Coherent Photonic Crystal Surface-Emitting Laser Arrays

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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。