多功能元器件用于全极化旋转和近红外聚焦
Hengyi Wan1,2,3, Kai Ou1,2,3, Hui Yang4
1Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
Micromachines
|June 27, 2024
概括
这项研究引入了一种新的超表面策略,以创建具有完全极化控制的多通道聚焦光束. 这促进了微纳米应用的光学操纵技术的进步.
科学领域:
- 光学和光子学 在光学和光子学.
- 材料科学 材料科学 材料科学
背景情况:
- 超表面可以控制极化,但仅限于单个功能.
- 对于多通道光束来说,生成任意极化状态仍然是一个挑战.
研究的目的:
- 提出一种新的策略,用于产生具有任意偏振旋转的多通道聚焦束.
- 为了实现完全的极化控制,使用全介电双断层元表面.
主要方法:
- 采用了多通道空间复杂干扰策略.
- 使用了同时调节传播和几何相的方法.
- 实现了对不同循环极化波线的独立控制.
主要成果:
- 证明了高效的多通道极化旋转元器件.
- 在所有频道中实现了超高的极化灭绝比率和高的聚焦效率.
- 验证了对于明显的圆极化波线前线的独立控制.
结论:
- 拟议的方法提供了一种紧而通用的波纹成形技术,用于完全控制极化.
- 这项工作为微纳米光学操纵中的多功能元光学设备铺平了道路.
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