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按需的多重旋束用于基于元表面的太赫兹极化检测

Wenhui Xu¹, Hui Li¹, Shouxin Duan²

¹Key Laboratory of Opto-Electronics Information Technology (Tianjin University), Ministry of Education, School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China. xh_931119@tju.edu.cn.

|October 19, 2023

概括

这项研究引入了一种用于太赫兹 (THz) 极化检测的新型超表面设计. 它使可视化极化状态分析成为可能,这对于高级THz应用至关重要.

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
电磁主义电磁主义

背景情况:

精确的极化测量对于光物质相互作用和科学应用至关重要.
传统的太赫兹 (THz) 极化检测方法复杂且有限.
超表面与不均的向量束 (VVBs) 结合,提供了一个有前途的综合解决方案.

研究的目的:

介绍用于THz极化检测的全元表面旋转复合的一般设计策略.
为了证明这些超表面在可视化和重建THz极化状态方面的能力.
建立一个可视化的参数模型来分析极化演变.

主要方法:

设计全超表面,使用高面积比例的构建块用于VVB生成.
使用THz近场扫描系统来评估极化重建.
采用动态变化的偏振作为快照分析的照明方法.

主要成果:

展示了一个超表面,能够产生VVB,并进行紧密的聚焦.
从纵向组件成功重建了事件THz极化状态.
建立了一个可视化的参数模型,用于在单一快照中分析极化演变.

结论:

开发的超表面策略使得高效和可视化的THz极化检测成为可能.
这种方法有助于创建超紧的THz极化检测设备.
潜在的应用包括遥感,高分辨率成像和通信.

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