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使用贝叶斯优化使用随机元表面制造的光学过器
Parker R Wray1, Elijah G Paul2, Harry A Atwater2
1Department of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Nanophotonics (Berlin, Germany)
|December 5, 2024
概括
研究人员使用随机介电粒子元表面设计了红外光学过器. 这种反向设计方法可以通过操纵粒子散射和合来精确控制光谱带.
科学领域:
- 光学和光学工程的光学和光学工程.
- 材料科学是一种材料科学.
- 计算物理学的计算物理.
背景情况:
- 超表面通过工程纳米结构提供独特的光学特性.
- 设计光学波器通常需要精确,有序的安排.
- 随机排列的粒子对可预测的光学反应构成了挑战.
研究的目的:
- 从理论上研究使用随机元表面的光学波器的设计.
- 探索单一材料,单层随机介电粒子系统的潜力.
- 为了在红外频谱中实现特定的光谱过 (长通,短通,带通,带止).
主要方法:
- 利用贝叶斯式和一般化的Mie反向设计方法.
- 为随机元表面设计的粒子半径分布.
- 分析了光学响应与多极散射 (电磁) 和近场合之间的关系.
主要成果:
- 成功设计了能够执行各种光学过功能 (长通,短通,带通,带止) 的随机元表面.
- 证明光学响应与介电粒子的多极散射和近场相互作用直接相关.
- 展示了粒子大小分布和粒子间合对无序系统中的过器性能的影响.
结论:
- 由介电粒子组成的随机元表面可以有效地设计用于光学过应用.
- 反向设计方法为控制无序光子系统中的光谱特征提供了一条途径.
- 了解多极散射和合对于优化随机地表基于光学过器至关重要.
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