通过腔体几何设计塑造vcsel的光。

IF 23.4 Q1 OPTICS
Hang Lu,Omar Alkhazragi,Heming Lin,Tien Khee Ng,Boon S Ooi
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引用次数: 0

摘要

垂直腔面发射激光器(VCSELs)在现代光电系统中是必不可少的,驱动高速光通信,3D传感和激光雷达的应用。虽然在提高VCSEL性能方面取得了重大进展,但腔几何结构在优化关键光学特性方面的作用仍未得到充分探讨。本研究系统地研究了不同的腔体几何形状——圆形、方形、d形、蘑菇形和五角形——如何影响广域VCSELs的静态和动态特性。我们分析了它们对光功率、多模行为、光束轮廓、空间相干性和偏振动力学的影响。结果表明,打破腔体的连续旋转对称性可以有效地提高增益利用率和功率,改变多模激光特性,改变光束形状,改变偏振。值得注意的是,五边形VCSEL的光功率密度是圆形VCSEL的两倍多。它还支持最高数量的模式和最快的模式动态,由强模式交互驱动。这些特性使它成为高速熵生成的有力候选者。蘑菇形状的vcsel具有高功率和低空间相干性,使其成为无斑点成像和照明应用的理想选择。同时,d形vcsel在高功率下提供了最稳定的偏振和可控的多模行为,显示了它们在需要稳定和低相干光源的应用中的潜力。本研究全面分析了腔体几何形状对VCSEL性能的影响,为优化VCSEL设计提供了见解,这些VCSEL设计适合不同的应用,需要不同的性能,广泛适用于先进的成像、传感、光学相干断层扫描、高速通信和其他光子技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Shaping the light of VCSELs through cavity geometry design.
Vertical-cavity surface-emitting lasers (VCSELs) are essential in modern optoelectronic systems, driving applications in high-speed optical communications, 3D sensing, and LiDAR. While significant progress has been made in improving VCSEL performance, the role of cavity geometry in optimizing key optical characteristics remains insufficiently explored. This study systematically examines how distinct cavity geometries-circular, square, D-shaped, mushroom-shaped, and pentagonal-affect both the static and dynamic properties of broad-area VCSELs. We analyze their effects on optical power, multimode behavior, beam profile, spatial coherence, and polarization dynamics. Our results show that breaking the continuous rotational symmetry of the cavity effectively increases gain utilization and power, changes the multimode lasing characteristics, shapes the beam, and modifies the polarization. Notably, the pentagonal VCSEL exhibits more than twice the optical power density of its circular counterpart. It also supports the highest number of modes and the fastest mode dynamics, driven by strong mode interaction. These properties make it a strong candidate for high-speed entropy generation. Mushroom-shaped VCSELs demonstrate high power and low spatial coherence, making them ideal for speckle-free imaging and illumination applications. Meanwhile, D-shaped VCSELs provide the most stable polarization and controllable multimode behavior with high power, showcasing their potential for applications that require stable and low-coherence light sources. This study offers a comprehensive analysis of the impact of cavity geometry on VCSEL performance, which provides insights for optimizing VCSEL designs tailored to diverse applications that require distinct properties with broad applicability to advanced imaging, sensing, optical coherence tomography, high-speed communication, and other photonic technologies.
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来源期刊
Light-Science & Applications
Light-Science & Applications 数理科学, 物理学I, 光学, 凝聚态物性 II :电子结构、电学、磁学和光学性质, 无机非金属材料, 无机非金属类光电信息与功能材料, 工程与材料, 信息科学, 光学和光电子学, 光学和光电子材料, 非线性光学与量子光学
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发文量
803
审稿时长
2.1 months
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