光可重构和电可切换空间太赫兹波调制器[特邀]

IF 3.3 2区物理与天体物理 Q2 OPTICS

Chinese Optics Letters Pub Date : 2023-01-01 DOI:10.3788/col202321.010002

Hongguan Yu, Huacai Wang, Zhixiong Shen, Shina Tao, Shijun Ge, Wei Hu

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引用次数: 1

摘要

空间太赫兹波调制器可以任意调整电磁波前，在无损检测和大容量无线通信中有很高的需求。在此，我们提出一种液晶集成元器件。它在空间上改变环境折射率时，基于可调的电磁诱导透明度模拟来调制太赫兹波。该装置的功能可以通过一个基于数字微镜装置的曝光系统，通过液晶的光定向来任意编程。薄液晶层可进一步由电场驱动，从而实现功能的快速切换。在0.94太赫兹的调制深度超过50%时，证明了振幅调制和透镜效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Photo-reconfigurable and electrically switchable spatial terahertz wave modulator [Invited]

Spatial terahertz wave modulators that can arbitrarily tailor the electromagnetic wavefront are in high demand in nondestructive inspections and high-capacity wireless communications. Here, we propose a liquid crystal integrated metadevice. It modulates the terahertz wave based on the adjustable electromagnetically induced transparency analog when spatially changing the environmental refractive index. The functions of the device can be arbitrarily programmed via photo-reorienting the directors of liquid crystals with a digital micromirror device-based exposing system. The thin liquid crystal layer can be further driven by an electric field, and thus the function can be rapidly switched. Amplitude modulation and the lens effect are demonstrated with modulation depths over 50% at 0.94 THz.

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来源期刊

Chinese Optics Letters 物理-光学

CiteScore

5.60

自引率

20.00%

发文量

180

审稿时长

2.3 months

期刊介绍： Chinese Optics Letters (COL) is an international journal aimed at the rapid dissemination of latest, important discoveries and inventions in all branches of optical science and technology. It is considered to be one of the most important journals in optics in China. It is collected by The Optical Society (OSA) Publishing Digital Library and also indexed by Science Citation Index (SCI), Engineering Index (EI), etc. COL is distinguished by its short review period (~30 days) and publication period (~100 days). With its debut in January 2003, COL is published monthly by Chinese Laser Press, and distributed by OSA outside of Chinese Mainland.