选择模式的辅助算法设计,反映了BAL应用程序的元结构
Zean Li1,2, Xunyu Zhang1,2, Cheng Qiu1,3
1State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.
Nanomaterials (Basel, Switzerland)
|May 10, 2024
概括
我们为广域激光器 (BALs) 开发了一种新的超表面波导,以提高光束质量. 这种结构起到模式选择反射器的作用,显著增强基本模式反射,同时抑制不需要的模式.
科学领域:
- 光学和光子学 在光学和光子学.
- 半导体激光器半导体激光器
- 超材料是指一种超材料.
背景情况:
- 广域激光器 (BAL) 提供高功率,但由于多模式操作,空间光束质量差.
- 在许多高功率应用中,提高BAL的光束质量至关重要.
研究的目的:
- 提出和设计一种新的超表面波导结构,用于BALs的横向模式选择.
- 为了增强基本模式的反射,并在BAL中抑制更高阶模式.
主要方法:
- 利用数字辅助算法用于反向设计超表面波导结构.
- 研究了一种具有40 × 20 μm2设计面积的设备.
- 执行模拟以评估模式选择性和反射特征.
主要成果:
- 实现了高基本模式反射率超过90%.
- 抑制了高阶横向模式反射,使其低于0.2%.
- 展示了迄今为止使用反向方法设计的最大的设备结构.
结论:
- 拟议的超表面波导有效地作为BALs的横向模式选择性反射器.
- 数字辅助算法适用于设计面积大,自由度高的光子结构.
- 设计的设备表现出强度和可行性,用于实际应用.
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