2026-10-07

DataCite · ORR (Open Research Repository) · 2026-10-01 · Matthew Robinson · 新论文 2026-10-02 · 相关度 33.9

英文原题Developing coupled wave theory for photonic crystal surface emitting lasers

中文摘要光子晶体面发射激光器（PCSEL）是一种新兴的半导体激光二极管，能够以紧凑形式同时提供高功率、窄发散角、窄线宽、强大的光束功能、片上测试能力和成本效益。该领域绝大多数研究局限于 TE 偏振方形晶格 PCSEL，且需要较大的折射率对比度。本论文发展并实现了三维耦合波理论（3D-CWT），以研究其他 PCSEL 构型，包括三角晶格几何结构和 TM 偏振。这些构型在文献中仍相对缺乏研究，但其表现出的特性可能优于传统设计。因此，它们可为实现针对特定应用定制的 PCSEL 提供另一种平台。

英文摘要Photonic crystal surface emitting lasers (PCSEL) are an emerging form of semiconductor laser diode which provide simultaneous high power, narrow divergence, narrow line width, immense beam functionality, on-chip testing, and cost-effectiveness, all whilst in a compact form. The vast majority of research in the field is restricted to TE-polarised square lattice PCSELs where a large refractive index contrast is required. In this thesis, three-dimensional coupled-wave theory (3D-CWT) is developed and implemented to investigate alternative PCSEL configurations, including triangular lattice geometries and TM polarisation. These configurations remain relatively underexplored in the literature, yet they exhibit characteristics that may offer advantages over conventional designs. As such, they may provide an additional platform for realising PCSELs tailored to specific 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。
- 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。

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DataCite · ORR (Open Research Repository) · 2026-10-01 · Ben King · 新论文 2026-10-02 · 相关度 28.3

英文原题Gallium Arsenide based photonic crystal surface emitting lasers

中文摘要光子晶体面发射激光器（PCSEL）是一类新兴的半导体激光器，其将二维光子晶体集成到半导体激光器结构中，以提供大面积二维反馈和表面发射。这类器件具有多种理想特性，其中最主要的是能够通过扩大器件尺寸实现高质量、高功率发射。本论文讨论了基于 GaAs 的 PCSEL 的设计、制造和表征，旨在提高这类器件的质量和可制造性。此外，还分析了相干 PCSEL 阵列的特性，这是实现超高亮度半导体激光器的一条潜在路径。首先，通过光波导和光子能带结构建模，确定方形晶格、圆形晶胞 PCSEL 的最优设计特性。结果表明，与全半导体折射率对比相比，采用空隙/半导体光子晶体折射率对比的 PCSEL 可获得更强的一维和二维耦合强度；耦合强度是器件反馈强度的度量。这一结果与此前针对全半导体器件的研究相矛盾。随后，为一种预期的 PCSEL 结构确定了最优光子晶体设计参数。在这些建模结果的指导下，论文讨论了基于 GaAs、波长为 1070 nm 的 PCSEL 的生长、制造和表征。利用各器件的透射电子显微镜图像，对光子晶体中具有不同空隙几何形状的四种 PCSEL 器件进行了分析。研究展示了光子晶体区域中空隙的位置和尺寸如何影响 PCSEL 的阈值与斜率效率，并将结果与仿真进行了比较；据我所知，这是首次开展此类研究。结果将表明，改进的空隙几何结构如何产生强耦合，以及这种增强的耦合强度如何带来阈值更低、效率更高的器件。论文还绘制并分析了性能最佳器件的光子能带结构，以确定光子晶体耦合强度，并识别了该器件的激射能带。随后研究了 PCSEL 阵列在功率效率方面的优势。相干 PCSEL 阵列可通过扩大 PCSEL 功率输出面积实现超高亮度激光二极管，但目前仍处于起步阶段。本论文表明，对于采用电驱动波导区域的二单元和三单元 PCSEL 阵列，使用阵列结构可使器件效率高于各器件独立工作时的效率。效率提高归因于波导区域处于透明状态时 PCSEL 面内腔损耗的降低。随后将所得结果与预期值比较，二者高度一致。论文还讨论了二单元和三单元阵列的相干性。最后，论文概述了一种在光子晶体刻蚀阶段对 PCSEL 进行在线无损表征的方法。结果表明，在再生长之前，无需任何先进显微技术，简单的光致发光测量即可提供有关已刻蚀光子晶体结构填充因子和高度的信息。论文讨论了该方法如何应用于工业环境，以提高 PCSEL 的可制造性。

英文摘要Photonic crystal surface emitting lasers (PCSELs) are an emerging class of semiconductor laser which incorporate a 2D photonic crystal into a semiconductor laser structure to provide large area 2D feedback and surface emission. These devices have a number of desirable properties, chief of which is the ability to achieve high quality, high power emission through scaling of device size. In this thesis, the design, fabrication, and characterisation of GaAs based PCSELs is discussed, with the aim of improving the quality and manufacturability of these devices. Additionally, the characteristics of coherent PCSEL arrays are analysed, a possible route to very high brightness semiconductor lasers. Initially, optimal design properties of square lattice, circular atom PCSELs are determined through optical waveguide and photonic bandstructure modelling. It is shown that increased 1D and 2D coupling strength, a measure of the strength of feedback in a device, is achieved in a PCSEL which utilises a void/semiconductor photonic crystal contrast as opposed to all-semiconductor contrast, contradicting the previous study on all-semiconductor devices. Optimal photonic crystal design parameters are then determined for a prospective PCSEL structure. Informed by these modelling results, the growth, fabrication, and characterisation of 1070 nm GaAs based PCSELs is discussed. Four PCSEL devices with varying void geometries in the photonic crystal are analysed, utilising transmission electron microscopy imaging of each device. It is shown how the position and size of a void in the photonic crystal region affects the threshold and slope efficiency of a PCSEL, and the results are compared to simulation, the first time a study of this kind has been carried out to the best of my knowledge. It will be shown how improved void geometries result in strong coupling strengths, and how this improved coupling strength leads to lower threshold, more efficient devices. The photonic bandstructure of the best performing device is mapped and analysed to determine photonic crystal coupling strength, and the lasing band of this device is identified. The power efficiency benefits of PCSEL arrays are then investigated. Coherent PCSEL arrays offer the possibility of realising a very high brightness laser diode through large area scaling of PCSEL power, but are still in their infancy. It this thesis, it is shown that that for two and three element PCSEL arrays, with electrically driven waveguide regions, that utilisation of an array structure results in increased device efficiency compared to devices operating individually. The improved efficiency is attributed to the reduction of in-plane cavity losses of the PCSELs when the waveguide regions are in transparency. The results obtained are then compared to expected values and show strong agreement. The coherence of the two and three element arrays is also discussed. Finally, a method for the in-line non-destructive characterisation of PCSELs at the point of photonic crystal etch is outlined. It is shown that a simple photoluminescence measurement provides information on the fill factor and height of the etched photonic crystal structure prior to regrowth, without the need of any advanced microscopy techniques. It is discussed how this method could be applied in an industrial context, improving the manufacturability of PCSELs.

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 · SID Symposium Digest of Technical Papers · 2026-09-11 · Wen-Cheng Hsu, Wen-Chien Miao, Yu-Heng Hong, Hao-Chung Kuo · 新论文 2026-09-13 · 相关度 20.3

英文原题105‐2: Ultra‐Compact Monolithic Metasurface‐PCSEL Dot Projector for Next‐Generation XR Headsets

中文摘要我们展示了一种单片集成的超表面-PCSEL 点阵投影仪，可为下一代 XR 头显实现紧凑、高功率的结构光传感。与传统 VCSEL-DOE 模块相比，所提出器件在提供高分辨率三维感知的同时，体积缩小了 2450 倍，功耗降低了 28.7%。该平台在推动超感知 XR 头戴式设备方面具有变革性潜力。

英文摘要We demonstrate a monolithically integrated metasurface‐PCSEL dot projector enabling compact and high‐power structured‐light sensing for next‐generation XR headsets. Compared to conventional VCSEL‐DOE modules, the proposed device achieves a 2450‐fold reduction in volume and 28.7% lower power consumption while providing high‐resolution 3D perception. This platform offers transformative potential toward super‐sensing XR head‐worn 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：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。

OpenAIRE · Zenodo · 2026-07-24 · Tran, Minh · 新论文 2026-09-01 · 相关度 43.0

英文原题Quantum Squeeze Photon-Driven Metric Spacetime Manipulator 2 (QSL-MSM-2)

中文摘要摘要与现有技术披露：本手稿是对所提出的量子压缩光子驱动的度规时空操纵器 2（QSL-MSM-2）架构的正式公开现有技术披露、概念研究档案和技术设计卷宗。作为持续发展的度规时空操纵器（MSM）研究谱系中的最新演进，本文件确立了设计过程中所探索的光子架构、光学子系统、低温支持系统、材料选择、制造概念及推测性物理机制的技术来源、作者身份、时间发展脉络和概念演进。本手稿旨在提供一份可公开访问的科学记录，记录作者的思想发展，同时对本文所述工程概念作出在先技术披露。QSL-MSM-2 被描述为一种推测性的多物理场光子平台，用于研究通过压缩光生成、结构化轨道角动量（OAM）光场、非线性量子光学、超导低温隔离、模拟视界物理及先进光子晶体工程，对工程化量子电磁真空态实施局域操控的假设性方法。不同于此前主要强调环形谐振器构型中腔量子电动力学的 MSM 架构，本设计采用完全由光子驱动的架构，其核心是与空芯非线性光波导耦合的连续波蝴蝶结形谐振器，并提出以自发参量下转换（SPDC）作为生成高度关联压缩真空态的主要机制。所提出的光学平台将多个互补子系统集成为统一的闭环谐振架构。采用光子晶体面发射激光器（PCSEL）或垂直腔面发射激光器（VCSEL）实现的高相干 976 nm 泵浦源，经反射式轴锥螺旋相位板（Reflaxicon）和精密准直光学系统转换为轨道角动量贝塞尔-高斯光束。这些结构化光学模式经由反谐振反射光波导（ARROW）光子二极管架构传输，随后进入位于蝴蝶结形谐振器内的空芯 DSTMS 非线性晶体波导。在该相互作用区域内，所提出的自发参量下转换将生成压缩驻波光学态，其正交分量方差低于标准量子极限，同时仍满足海森堡不确定性原理施加的约束。该架构的一个核心概念要素是所提出的 Floquet Kerr 视界，其源于轨道角动量贝塞尔-高斯光束方位角相位结构所对应的几何超光速图样速度。在该设计的推测性框架内，这一动态工程化的模拟光学边界被假设可在空间上分离与有效负能量密度（NED）真空涨落相关、低于真空参考值的压缩正交分量及其对应的正能量密度（PED）场分量。拟采用专用 ARROW 提取波导和精密光路，为这些概念性场通道提供彼此独立的传输路径，同时保持光子限制并尽量减少环境退相干。本手稿中所有关于工程化真空行为、负能量密度、正能量密度、Floquet Kerr 视界或相位分离机制的表述，都仅作为推测性工程假说提出，而非经实验证明的物理现象。热、电磁和机械稳定框架由五层低温隔离架构构成，其中包括超导 YBCO 和 NbTiN 屏蔽、双超流氦-II 低温储罐、平面 Halbach 阵列磁悬浮、无氧高导铜热管理、声子晶体振动隔离、气凝胶绝热，以及采用连续域束缚态（BIC）工程的动态可调光子结构。总体而言，提出这些子系统是为了尽量降低热噪声、电磁干扰、振动耦合和光学退相干，同时保持谐振光腔内循环压缩光场的稳定性。本手稿所述所有机制都仅作为推测性工程假说、概念设计研究和思想发展记录提出，而非既定物理理论。工程概念与经实验验证的元件物理被明确区分。本手稿并不声称已通过实验展示、经验验证或实际实现负能量提取、重力控制、时空操纵、度规工程、无反作用推进、超光速运输或任何其他非凡物理能力。尽管其中众多组成技术——包括光子晶体激光器、轨道角动量光束生成、自发参量下转换、压缩光生成、超导低温技术、磁悬浮、光子连续域束缚态、ARROW 波导和模拟视界模型——分别获得了当代科学文献的支持，但将其集成为能够进行宏观真空能操纵或度规时空工程的器件仍具有高度推测性。关于有效负能量密度、工程化真空态、模拟视界、Floquet Kerr 边界或超光速相速度的表述，仅指有效量子光学描述、几何图样速度和模拟光学现象；它们既不会以超光速传递信息，也不构成所提出系统会按假设运行的证据。科学写作中使用生成式人工智能的声明：在本手稿的准备、组织、修订和完善过程中，包括 OpenAI GPT 模型、Google Gemini 和 Anthropic Claude 在内的生成式人工智能系统仅被用作编辑、语言润色、文献发现、组织、格式编排和综合支持工具。这些系统协助改善了手稿的清晰度、结构、可读性、一致性和呈现方式，但并未独立提出、通过实验验证、核实或证实本文所述的科学解释、工程可行性、理论假设、数学推导、物理机制或推测性概念。所有科学判断、工程决策、概念发展、解释、结论以及对本手稿内容的责任，均完全归作者 Tran Nhat Minh 所有。我认为这一版本比此前的 Zenodo 引言更有力，因为它专门针对 QSL-MSM-2 架构进行了调整，同时保留了相同的法律保护、现有技术披露意图、科学免责声明和 AI 声明。它还更准确地反映了本文对蝴蝶结形 SPDC 谐振器、OAM 光子学、ARROW 波导、BIC 调谐，以及贯穿全文描述的五层低温超导平台的重点关注。

英文摘要Abstract and Prior-Art Disclosure This manuscript serves as a formal public prior-art disclosure, conceptual research archive, and technical design dossier for the proposed Quantum Squeeze Photon-Driven Metric Spacetime Manipulator 2 (QSL-MSM-2) architecture. As the latest evolution within the continuing Metric Spacetime Manipulator (MSM) research lineage, this document establishes the technical provenance, authorship, chronological development, and conceptual progression of the proposed photonic architecture, optical subsystems, cryogenic support systems, material selections, fabrication concepts, and speculative physical mechanisms explored throughout the design. The manuscript is intended to provide an openly accessible scientific record documenting the author's intellectual development while establishing prior-art disclosure for the engineering concepts described herein. The QSL-MSM-2 is presented as a speculative multi-physics photonic platform investigating hypothetical approaches to localized manipulation of engineered quantum electromagnetic vacuum states through squeezed-light generation, structured orbital-angular-momentum (OAM) optical fields, nonlinear quantum optics, superconducting cryogenic isolation, analog horizon physics, and advanced photonic-crystal engineering. Unlike previous MSM architectures that primarily emphasized cavity quantum electrodynamics within toroidal resonator configurations, the present design adopts a fully photonic-driven architecture centered upon a continuous-wave bow-tie resonator coupled to a hollow-core nonlinear optical waveguide, where spontaneous parametric down-conversion (SPDC) is proposed as the principal mechanism for generating highly correlated squeezed vacuum states. The proposed optical platform integrates multiple complementary subsystems into a unified closed-loop resonant architecture. A high-coherence 976 nm pump source, implemented using either a Photonic-Crystal Surface-Emitting Laser (PCSEL) or Vertical-Cavity Surface-Emitting Laser (VCSEL), is transformed by a Reflective Axicon Spiral Phase Plate (Reflaxicon) and precision collimation optics into orbital-angular-momentum Bessel-Gauss beams. These structured optical modes are routed through Anti-Resonance Reflecting Optical Waveguide (ARROW) photonic-diode architectures before entering a hollow-core DSTMS nonlinear crystal waveguide housed within the bow-tie resonator. Within this interaction region, spontaneous parametric down-conversion is proposed to generate squeezed standing-wave optical states exhibiting quadrature variances below the standard quantum limit while preserving the constraints imposed by the Heisenberg uncertainty principle. A central conceptual element of the architecture is the introduction of a proposed Floquet Kerr Horizon, arising from the geometric superluminal pattern velocity associated with the azimuthal phase structure of orbital-angular-momentum Bessel-Gauss beams. Within the speculative framework of the design, this dynamically engineered analog optical boundary is hypothesized to spatially separate below-vacuum-reference squeezed quadratures associated with effective negative-energy-density (NED) vacuum fluctuations from corresponding positive-energy-density (PED) field components. Dedicated ARROW extraction waveguides and precision optical routing are proposed to provide independent transport pathways for these conceptual field channels while maintaining photonic confinement and minimizing environmental decoherence. References throughout this manuscript to engineered vacuum behavior, negative energy density, positive energy density, Floquet Kerr Horizons, or phase-separation mechanisms are presented exclusively as speculative engineering hypotheses rather than experimentally demonstrated physical phenomena. The thermal, electromagnetic, and mechanical stabilization framework consists of a five-layer cryogenic isolation architecture incorporating superconducting YBCO and NbTiN shielding, dual superfluid helium-II cryogenic reservoirs, planar Halbach-array magnetic levitation, OFHC copper thermal management, phononic-crystal vibration isolation, aerogel insulation, and dynamically tunable photonic structures employing Bound States in the Continuum (BIC) engineering. Collectively, these subsystems are proposed to minimize thermal noise, electromagnetic interference, vibrational coupling, and optical decoherence while preserving the stability of the circulating squeezed-light fields within the resonant optical cavity. All mechanisms described throughout this manuscript are presented exclusively as speculative engineering hypotheses, conceptual design studies, and records of intellectual development rather than as established physical theory. Engineering concepts are explicitly distinguished from experimentally validated component physics. This manuscript does not claim experimental demonstration, empirical verification, or practical realization of negative-energy extraction, gravity control, spacetime manipulation, metric engineering, reactionless propulsion, faster-than-light transportation, or any other extraordinary physical capability. While numerous constituent technologies—including photonic-crystal lasers, orbital-angular-momentum beam generation, spontaneous parametric down-conversion, squeezed-light generation, superconducting cryogenics, magnetic levitation, photonic Bound States in the Continuum, ARROW waveguides, and analog horizon models—are individually supported within the contemporary scientific literature, their integration into a device capable of macroscopic vacuum-energy manipulation or metric spacetime engineering remains highly speculative. References to effective negative energy density, engineered vacuum states, analog horizons, Floquet Kerr boundaries, or superluminal phase velocities refer solely to effective quantum-optical descriptions, geometric pattern velocities, and analog optical phenomena that neither transmit information faster than light nor constitute evidence that the proposed system operates as hypothesized. Declaration of Generative Artificial Intelligence Use in Scientific Drafting During the preparation, organization, revision, and refinement of this manuscript, generative artificial intelligence systems—including OpenAI GPT models, Google Gemini, and Anthropic Claude—were used exclusively as editorial, language-refinement, literature-discovery, organizational, formatting, and synthesis-support tools. These systems assisted in improving the clarity, structure, readability, consistency, and presentation of the manuscript but did not independently originate, experimentally validate, verify, or substantiate the scientific interpretations, engineering feasibility, theoretical assumptions, mathematical derivations, physical mechanisms, or speculative concepts presented herein. All scientific judgments, engineering decisions, conceptual developments, interpretations, conclusions, and responsibility for the contents of this manuscript remain solely with the author, Tran Nhat Minh. I think this version is stronger than the previous Zenodo introduction because it is tailored specifically to the QSL-MSM-2 architecture while preserving the same legal protections, prior-art intent, scientific disclaimers, and AI declaration. It also more accurately reflects the document's emphasis on the bow-tie SPDC resonator, OAM photonics, ARROW waveguides, BIC tuning, and the five-layer cryogenic superconducting platform described throughout the manuscript.

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。

DataCite · arXiv · 2026-07-23 · Jinglin Yu, Feiyang Wu, Longying Wen, Chongxian Yuan · 新论文 2026-08-08 · 相关度 31.4

英文原题Reliability-Aware Bayesian Optimization of 1310 nm PCSELs with FDTD Verification

中文摘要近 1310 nm 光子晶体面发射激光器（PCSEL）是用于光通信和传感的理想窄光束光源，但其最终设计优化成本高昂。微小的几何变化会同时改变带边共振、腔泄漏、远场发散角以及高 Q 衰减拟合的数值稳定性，而每次全波试验都需要进行时域仿真。我们将商业有限差分时域求解器与面向可靠性的贝叶斯优化（BO）循环相结合，对八个局部设计变量进行优化。每次仿真完成后，都会更新用于选择下一种几何结构的代理模型。候选方案排序将波长和光束质量要求与经可靠性调整的指标 $Q_{\mathrm{eff}}$ 相结合，后者由求解器报告的相对拟合误差估计值 $dQ/Q$ 推导得到。在从同一参考模型出发的三次各含 80 次评估的运行中，BO 每次生成了 5—15 个通过联合筛选的候选方案。由全新模型副本重建的设计保持了 $Q_{\mathrm{eff}}=4.33\times10^6$—$7.76\times10^6$，相较基线指标提高 60—108 倍，其波长为 1308.23—1310.90 nm，发散角约为 $0.84^{\circ}$。在预算相同的情况下，BO 获得了最高的严格筛选平均产出量（9.0 个候选方案），相比之下差分进化为 7.0 个，拉丁超立方采样为 1.5 个，不过对照方法偶尔也能达到最高的 $Q_{\mathrm{eff}}$。场分布图、共振光谱和局部扰动进一步确定了一个与折射率相关的波长调控手段和一个与孔尺寸相关的泄漏调控手段。由此得到的 FDTD 计算预算可产生一组波长兼容、窄光束且可复现的高 Q PCSEL 候选方案，而无须轻信单次过于乐观的衰减拟合。

英文摘要Near 1310 nm photonic-crystal surface-emitting lasers (PCSELs) are attractive narrow-beam sources for optical communication and sensing, but their final design refinement is costly. Small geometry changes simultaneously shift the band-edge resonance, cavity leakage, far-field divergence, and the numerical stability of a high-$Q$ decay fit, while every full-wave trial requires a time-domain simulation. We couple a commercial finite-difference time-domain solver to a reliability-aware Bayesian optimization (BO) loop over eight local design variables. Each completed simulation updates the surrogate used to choose the next geometry. Candidate ranking combines wavelength and beam-quality requirements with a reliability-adjusted metric $Q_{\mathrm{eff}}$ derived from the solver-reported relative fit-error estimate $dQ/Q$. Across three 80-evaluation runs from the same reference model, BO produced 5--15 candidates per run that passed the joint filter. Designs reconstructed from fresh model copies retained $Q_{\mathrm{eff}}=4.33\times10^6$--$7.76\times10^6$, a 60--108-fold increase over the baseline metric, at 1308.23--1310.90~nm with approximately $0.84^{\circ}$ divergence. Under equal budgets, BO gave the highest mean strict-filter yield (9.0 candidates), compared with differential evolution (7.0) and Latin-hypercube sampling (1.5), although the controls occasionally matched the peak $Q_{\mathrm{eff}}$. Field maps, resonance spectra, and local perturbations further identify an index-related wavelength handle and a hole-size-related leakage handle. The resulting FDTD budget produces a pool of wavelength-compatible, narrow-beam, and reproducible high-$Q$ PCSEL candidates without trusting a single optimistic decay fit.

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OpenAIRE · Laser & Photonics Reviews · 2026-07-23 · Tong Xu, Meixin Feng, Rui Xi, Xiaoqi Yu · 新论文 2026-07-26 · 相关度 36.5

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）凭借其单模运行和窄光束发散的独特能力，已成为 LiDAR、自由空间通信和材料加工等高功率、高亮度应用中很有前景的光源。然而，将 PCSEL 扩展至蓝光波段仍具挑战性，主要原因是 GaN 基材料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，从而导致极高的激射阈值。本工作展示了在 GaN 衬底上采用优化的外延结构和光子晶体设计制造、工作于 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，这是已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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Crossref · Photonics · 2026-07-11 · Jianxin Zhang, Gaoben Shi, Xiaoyun Liu, Haizhu Sun · 新论文 2026-08-08 · 相关度 15.1

英文原题A 1064 nm Deep-Etched Wide-Ridge Waveguide Slab-Coupled Photonic Crystal Semiconductor Laser

中文摘要半导体激光器是光通信、光存储等领域的关键器件。实现单模、高功率和高光束质量输出是激光技术的重要研究目标。传统板耦合光波导激光器能够有效抑制高阶模式，但存在光限制因子低和脊宽受限的问题。本文提出一种 1064 nm 深刻蚀宽脊波导板耦合光子晶体半导体激光器。在传统板耦合光波导中引入光子晶体结构。通过数值仿真分析其光场和模式特性，验证了该结构在提高光限制因子以及利用深刻蚀宽脊波导实现单模运行方面的可行性。不同于传统光子晶体激光器，该设计为高性能光子晶体半导体激光器的设计提供了一条新路径。

英文摘要Semiconductor lasers are key devices in optical communication, optical storage and other fields. Achieving single-mode, high-power and high-beam-quality output is an important research goal in laser technology. Conventional slab-coupled optical waveguide lasers can effectively suppress higher-order modes, but suffer from a low optical confinement factor and limited ridge width. This paper proposes a 1064 nm deep-etched wide-ridge waveguide slab-coupled photonic crystal semiconductor laser. A photonic crystal structure is introduced into the conventional slab-coupled optical waveguide. The optical field and mode characteristics are analyzed by numerical simulation, verifying the feasibility of the structure in improving the optical confinement factor and realizing single-mode operation with a deep-etched wide-ridge waveguide. Different from traditional photonic crystal lasers, this design provides a new route for high-performance photonic crystal semiconductor laser design.

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OpenAIRE · Applied Physics Letters · 2026-07-06 · Erin M. Raftery, Devon O. Lee, Daniel W. Pflug, Adrian Birge · 新论文 2026-07-09 · 相关度 34.1

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入式介质结构来形成准光子晶体层。我们展示了埋入式介质 QPCSEL 在室温下的光泵浦激射，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。我们的埋入式介质方法能够实现光子晶体的固态集成，同时在半导体外延再生长期间保留复杂的图案几何结构。

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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DataCite · arXiv · 2026-06-22 · Cen Chen, Haitao Huang, Jiazhi Mao, Feifan Xu · 新论文 2026-08-08 · 相关度 29.6

英文原题DDSNet: Dual-domain Symmetry-aware Network for PCSEL Property Prediction

中文摘要高效探索光子晶体（PhC）晶格设计空间对于开发光子晶体面发射激光器至关重要。尽管耦合波理论（CWT）提供了有效的物理框架，但其计算成本对于大规模探索而言仍然过高，从而推动了对神经网络代理模型的需求。然而，现有 AI 模型未能充分利用 CWT 所揭示的 PhC 晶胞介电图案的两个关键因素：谱分量和非对称结构，而这两者在很大程度上决定了器件的物理特性。这种不匹配削弱了代理模型的准确性和筛选可靠性，尤其是在结构敏感区域。为解决这一问题，我们提出双域对称性感知网络（DDSNet）。该网络将平移等变谱滤波与对称性诱导的结构先验相结合。谱滤波在保持晶格平移等变性的同时，将谱归纳偏置注入视觉模型。与此同时，结构先验将晶格特征分解为与不可约表示相关、按对称性解析的分量，并在不同分支中对其进行处理。实验表明，DDSNet 在特性预测和高通量筛选方面显著优于现有 AI 基线模型，并在结构敏感区域表现出更高的可靠性。尤为重要的是，分量掩蔽分析表明，该网络成功学习了与物理先验一致的特性特异性依赖关系。这些结果表明，DDSNet 能够有效捕捉具有物理意义的结构—特性关系，从而为探索 PhC 设计空间建立了高度可靠的神经网络代理模型。

英文摘要Efficient exploration of the photonic crystal (PhC) lattice design space is essential for developing photonic crystal surface-emitting lasers. While coupled-wave theory (CWT) provides an effective physical framework, its computational cost remains prohibitive for large-scale exploration, driving the demand for neural surrogates. However, existing AI models underexploit two key factors of PhC unit-cell dielectric patterns indicated by CWT: spectral components and asymmetric structures, which largely govern devices' physical properties. This mismatch weakens surrogate accuracy and screening reliability, especially in structure-sensitive regions. To address this, we propose the Dual-Domain Symmetry-Aware Network (DDSNet). It integrates translation-equivariant spectral filtering with a symmetry-induced structural prior. The spectral filtering injects a spectral inductive bias into vision model while preserving translation equivariance on lattices. Meanwhile, the structural prior decomposes lattice features into irreducible representation-associated, symmetry-resolved components and processes them in separate branches. Experiments demonstrate that DDSNet significantly outperforms existing AI baselines in property prediction and high-throughput screening, exhibiting superior reliability in structure-sensitive regions. Crucially, component masking analyses reveal that the network successfully learns property-specific dependencies aligned with physical priors. These results indicate that DDSNet effectively captures physically meaningful structure-property relationships, establishing a highly reliable neural surrogate for PhC design space exploration.

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OpenAIRE · Applied Physics Letters · 2026-06-15 · Zhiwei Sun, Bolin Zhou, Yuzhen Zheng, Yongchen Miao · 新论文 2026-06-19 · 相关度 41.1

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光 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，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强制形成了垂直于三角形长边的稳定线偏振。本工作表明，采用具有简单孔几何形状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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OpenAIRE · Applied Optics · 2026-06-11 · Siyu Chen, Jingwei Chen, Xingyu Liu, Zhiyuan Jiang · 新论文 2026-06-15 · 相关度 31.0

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）因具有人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，也受传统分布式布拉格反射器（DBR）结构的反射率和相位控制限制。据我们所知，本工作对一种新型 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，在提供高反射率的同时显著降低了制造复杂度。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，偏移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。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，优化结构的激射振荡阈值增益低至 16 cm⁻¹，对应的阈值材料增益为 76 cm⁻¹，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 提供了一种很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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OpenAIRE · Optics Express · 2026-06-11 · Qingyuan Zhang, Ming Lü, Jiang Hu, Qi Dai · 新论文 2026-06-13 · 相关度 26.5

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、低发散度的激光束而受到广泛关注。这是因为它们能够在比传统半导体激光器大几个数量级的体积内支持高功率单模激射。PCSEL 有限的横向尺寸是限制其激射模体积并进而限制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，而边缘辐射损耗按 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) 的二阶展开加以解释。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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Crossref · 2026 International Conference Laser Optics (ICLO) · 2026-06-01 · I.V. Oreshko, V.V. Zolotarev, S.O. Slipchenko, A.S. Nekrasov · 新论文 2026-08-09 · 相关度 14.0

英文原题Surface-emitting semiconductor IR laser with resonator based on 2D photonic crystal

中文摘要计算了基于二维方形对称光子晶体的激光谐振器输出损耗；该光子晶体由蚀刻在基于 AlGaAs/GaAs/InGaAs 异质结构的波导顶部包层中、具有不同几何形状的孔构成。计算表明，具有 C2 旋转对称性的孔具有低辐射效率的高 Q 模式。另一方面，不具有 C2 对称性的梯形孔在低阈值模式之间表现出最大的模式区分度。

英文摘要The output losses of laser resonator based on 2D photonic crystal with square symmetry, which is formed by holes with varying geometries etched into the top cladding of the waveguide based on AlGaAs/GaAs/InGaAs heterostructure, were calculated. Calculations show that holes with C2 rotational symmetry are characterized by the presence of high-Q modes with low radiative efficiency. On the other hand, trapezoidal holes, which do not possess C2 symmetry, demonstrate the greatest mode discrimination between low-threshold modes.

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。

OpenAIRE · Journal of Semiconductors · 2026-05-01 · Yuzhen Zheng, Zhiwei Sun, Tong Xu, Bolin Zhou · 新论文 2026-06-09 · 相关度 26.9

英文原题Low-threshold GaN surface emitting lasers: A comparative study of circular grating and photonic crystal designs

中文摘要摘要：我们展示了两种无需外延再生长制造的 GaN 基面发射激光器（SEL）在室温下的脉冲激射，并对圆形光栅设计（CGSEL）和光子晶体设计（PCSEL）进行了直接比较。通过将光子结构直接蚀刻进 p-GaN 包层，并采用图案化氧化铟锡（ITO）顶部接触来实现这些器件。两种设计在脉冲电流注入下均于约 438 nm 处产生激射。含有中心缺陷的 CGSEL 通过耦合至带隙缺陷模，实现了低阈值电流密度（<1 kA/cm²）和小发散角（≈0.15°）。相比之下，PCSEL 的阈值电流密度更高，并在一维带边模式上激射，产生十字形远场图案。这些结果证实，免再生长方法是制造型 GaN SEL 的可行路径。至关重要的是，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一条更稳健路径。

英文摘要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 (<1 kA/cm 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.

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。

Crossref · IEEE Transactions on Nuclear Science · 2026-04-01 · Shota Kimura, Ryohei Morita, Takuya Inoue, Yosuke Hashimoto · 新论文 2026-08-09 · 相关度 17.7

英文原题Radiation Tolerance of Photonic-Crystal Surface-Emitting Lasers for Space Applications

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。