通过腔体几何设计来塑造VCSELs的光
Hang Lu1, Omar Alkhazragi1,2, Heming Lin1
1Photonics Laboratory, Electrical and Computer Engineering Program, Division of Computer, Electrical, and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.
Light, science & applications
|September 28, 2025
概括
腔体几何学显著影响垂直腔体表面发射激光器 (VCSEL). 非圆形形状,如五角形,提高光学功率和模式动态,为先进的光子应用提供量身定制的性能.
科学领域:
- 光电学和光子学的光学电子和光子学.
- 半导体激光器半导体激光器
背景情况:
- 垂直腔表面发射激光器 (VCSEL) 对于光通信,3D传感和LiDAR至关重要.
- 通过腔体几何学优化VCSEL性能是一个尚未探索的领域.
研究的目的:
- 系统地研究各种腔体几何形状对广域VCSEL静态和动态特性的影响.
- 分析圆形,方形,D形,形和五角形腔如何影响光学功率,多模式行为,光束形状,空间连贯性和极化动态.
主要方法:
- 对具有明显腔体几何形状的VCSEL进行实验和理论分析.
- 评估光功率密度,模式特征,束形状,空间连贯性和极化动态.
主要成果:
- 打破旋转对称性提高了增益利用率,光学功率,并修改了激光的特性和极化.
- 五角形VCSEL显示>2倍的功率密度和最快的模式动态;形VCSEL提供高功率与低空间连贯性;D形VCSEL提供稳定的极化和可控制的多模式行为.
- 腔体几何学决定了VCSEL的性能,为特定应用提供了量身定制的设计.
结论:
- 腔体几何是优化VCSEL性能的一个关键设计参数.
- 特定的几何形状 (五角形,形,D形) 为各种应用提供了独特的优势,从高速通信到无斑点成像和稳定的低连贯源.
- 这项研究为为各种光子技术开发下一代VCSEL提供了基础见解.
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