2026-06-22

Semantic Scholar · Optics Express · 2023-01-01 · Qifa Liu, Minjia Meng, Shang Ma, Meixin Feng · 新论文 2026-06-13 · 相关度 52.3

英文原题Design of double-lattice GaN-PCSEL based on triangular and circular holes.

中文摘要我们从理论上设计了一种基于三角形和圆形孔的双晶格光子晶体表面发射激光器（PCSEL）。在该设计中，首次提出将具有较低折射率以及与 GaN 高质量无应力同质外延特性的多孔 GaN 作为 GaN-PCSEL 的包层。研究中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。我们的仿真实现了高达 50 cm -1 的辐射常数和超过 1 W/A 的斜率效率，同时保持低阈值增益。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，增加填充因子可提高辐射常数和斜率效率。非对称孔图案和不同蚀刻深度具有类似效果。在光子晶体中引入非对称图案和双晶格会打破平面内电场的对称性，而两个孔的不同蚀刻深度会打破垂直方向上的对称性。此外，改变双晶格的位移会改变谐振腔中的光反馈，从而导致腔损耗和限制因子的变化。

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 patterns and varying etching depths have a similar effect. The introduction of asymmetric patterns and a double lattice in the photonic crystal breaks the symmetry of electric fields in the plane, while different etching depths of the two holes break the symmetry in the vertical direction. Additionally, altering the shift of the double lattice modifies the optical feedback in the resonators, resulting in variations of cavity loss and confinement factor.

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：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 40.5

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

中文摘要我们报告了采用无再生长方法制备的室温蓝色 GaN 光子晶体表面发射激光器（PCSEL）二极管的成功实现。通过采用带有改良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。该器件以 5.2 kA/cm2 的阈值电流密度工作，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性质强制形成垂直于三角形长边的稳定线偏振。本工作表明，可以使用具有简单孔几何形状的非再生长制备工艺实现高光束质量的蓝色 PCSEL，为高性能蓝色激光光源铺平道路。

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。

Semantic Scholar · Photonics · 2024-01-01 · Junhong Liu, Yunfei Xu, Rusong Li, Jinchuan Zhang · 新论文 2026-06-13 · 相关度 48.5

英文原题High-Power Terahertz Photonic Crystal Surface-Emitting Laser with High Beam Quality

中文摘要光子晶体表面发射激光器（PCSEL）由于具有小远场发散角和高输出功率的优势而受到广泛关注。在这里，我们报告了一种通过优化吸收边界条件并引入对称分布电极而实现的具有高光束质量的高功率太赫兹（THz）光子晶体激光器。展示了在 3.4 THz 下的单模表面发射，最大峰值输出功率为 50 mW。同时，实现了具有 C6 对称性的高度对称远场图案和小发散角。在该器件中，实现了稳定单模工作、高光束质量和高输出功率的集成，这可能对实际应用具有重要意义。

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.

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 far field / 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 25.4

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

中文摘要光子晶体表面发射激光器（PCSELs）因其能够产生超高功率和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，其体积比传统半导体激光器大数个数量级。PCSEL 中有限的横向尺寸是限制其激射模式体积并因此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 α ⊥ ∼ O ( L −2 ) 缩放，而边缘辐射损耗 α ∥ ∼ O ( L −3 )。这两种缩放关系均可由能带图中复频率 ω ( k ) 的二阶展开解释。我们的结果为设计大面积类 PCSEL 器件时估计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 · IEEE Journal of Selected Topics in Quantum Electronics · 2026-04-23 · Mihai Crisan, Shamsul Arafin · 新论文 2026-06-09 · 相关度 44.9

英文原题Inverse Design of Photonic Crystal Lasers Through Automatic Differentiation Optimization

中文摘要（嵌入式）PhC 谐振腔激光器的行为与单元晶胞轮廓密不可分。因此，设计过程中的绝大部分不幸地依赖于对介电常数轮廓的审慎手动选择。这是不利的，因为这会丢弃关于目标函数（激光器的物理响应）的信息。我们通过采用基于梯度的流程来解决这一问题，该流程将计算设计任务分为两个步骤：二维光子本征模本征值问题（建模）和计算图（梯度传播）：（i）通过仿真正向传播以预测光子晶体表面发射激光器（PCSEL）的行为（远场和模式品质因子），以及（ii）反向传播步骤，其中计算（用户）定义的代价函数的梯度以更新单元晶胞设计。该方法在远场和腔内场性能指标上均超过了用于大规模 PCSELs 的当代单元晶胞设计。

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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

Semantic Scholar · International Semiconductor Laser Conference · 2024-01-01 · M. Pan, C. Gautam, Yudong Chen, Thomas J. Rotter · 新论文 2026-06-09 · 相关度 44.3

英文原题High Brightness Coherent Photonic Crystal Surface-Emitting Laser Arrays

中文摘要我们报告了一种相干光子晶体表面发射激光器（PCSEL）阵列的新型设计，通过在横向方向上被动耦合紧凑光子晶体腔实现。实验表征结果显示，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。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。

OpenAlex · 2026-06-05 · Yutong Di, Yi-Xiang Wang, Bojian Wang, Haoyu Chang · 新论文 2026-06-09 · 相关度 39.2

英文原题Design of high-slope-efficiency quantum dot photonic crystal surface-emitting lasers with metal reflector

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表面发射激光器（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提升。利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.

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 · 2026-05-28 · Alexander Cerjan · 新论文 2026-06-09 · 相关度 20.6

英文原题Steerable surface emitting laser design based on a line of bound states in the continuum

中文摘要传统光子晶体表面发射激光器（PCSELs）依赖于孤立的准连续体束缚态（q-BIC），这些态通常位于布里渊区中心，并提供高方向性和高品质因子。然而，由于其所依赖的 q-BICs 具有孤立性质，PCSELs 在需要连续可调谐性的应用中受到根本限制，需要构建许多不同的 PCSELs 并通过开关它们来实现这种可调谐性。在这里，我们引入一种新的腔几何结构，使用一种新型偏振和角度选择性布拉格反射镜来开发一种表面发射激光器，其特征是具有连续的连续体中束缚态线。由此产生的色散允许在宽波矢范围内形成高 Q 激射态，并具有双光束发射的潜力，其角间距可通过调节量子阱增益介质中的温度和注入电流来调谐。数值仿真证实，该构型产生高品质因子，并由于其降低的共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且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.

为什么与你有关
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 quality factor / quantum well。

今日必看：优先判断是否进入 PCSEL / CWT / 仿真建模文献库。