大功率单模相耦合线性VCSEL阵列的自热建模

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2025-07-10 DOI:10.1109/JPHOT.2025.3587464

V. Torrelli;M. C. G. Alasio;M. D'Alessandro;A. Gullino;L. Miri;J. Lindner;S. Gronenborn;M. Goano;P. Debernardi

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引用次数: 0

摘要

我们研究了大功率、大面积矩形垂直腔面发射激光器（VCSELs）单模（SM）发射的鲁棒性，强调了自热效应的影响。与圆形几何形状相比，大面积矩形vcsel由于其高几何长宽比而提供了更好的散热，并且通过光栅阵列获得的图案反射率提供了更高的SM输出功率。自热改变了器件的折射率。我们通过实验和数值证明了相关的热透镜如何影响横向模式。由于提升激光模式的反极与表面浮雕错位，如果在浮雕位置设计中没有适当考虑，自热会降低SM操作。结合热学和光学模型，我们提出了数值优化的光栅起伏几何形状，确保在不同的工作温度下稳健的SM发射。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Modeling Self-Heating in High-Power Single-Mode Phase-Coupled Linear VCSEL Arrays

We investigate the robustness of single-mode (SM) emission in high-power, large-area rectangular vertical-cavity surface-emitting lasers (VCSELs), emphasizing the impact of self-heating effects. Compared to circular geometries, large-area rectangular VCSELs provide improved heat dissipation thanks to their high geometrical aspect ratio, and higher SM output power by means of their patterned reflectivity obtainable by an array of grating reliefs. Self-heating alters the refractive index of the device. We demonstrate, experimentally and numerically, how the related thermal lensing affects the transverse modes. By misaligning the antinodes of the promoted lasing mode and the surface reliefs, self-heating degrades SM operation if not properly accounted for in the relief position design. Combining thermal and optical models, we propose numerically optimized grating relief geometries ensuring robust SM emission across varying operating temperatures.

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.