纳米线极化各向异性:太赫兹波段极化器件的基本概念和进展

IF 7.4 1区 物理与天体物理 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Progress in Quantum Electronics Pub Date : 2022-08-01 DOI:10.1016/j.pquantelec.2022.100417
Michael B. Johnston , Hannah J. Joyce
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引用次数: 4

摘要

半导体纳米线中明显的极化各向异性已被利用来实现在电磁波谱上工作的极化敏感器件,从紫外线到太赫兹波段。这篇文章描述了纳米线中光学和电学各向异性的物理起源。极化各向异性引起的电介质对比,以及(纳米)线栅偏振器的行为,是从第一性原理推导出来的。本文综述了纳米线中偏振敏感光-物质相互作用的实验观察。然后描述了如何在超快时间尺度上检测或调制偏振太赫兹辐射的设备中使用这些现象。这种新颖的太赫兹器件概念有望在各种各样的应用中找到用途,包括高速太赫兹波段通信和分子指纹识别。
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Polarization anisotropy in nanowires: Fundamental concepts and progress towards terahertz-band polarization devices

Pronounced polarization anisotropy in semiconductor nanowires has been exploited to achieve polarization-sensitive devices operating across the electromagnetic spectrum, from the ultraviolet to the terahertz band. This contribution describes the physical origins of optical and electrical anisotropy in nanowires. Polarization anisotropy arising from dielectric contrast, and the behaviour of (nano)wire grid polarizers, are derived from first principles. This review discusses experimental observations of polarization-sensitive light–matter interactions in nanowires. It then describes how these phenomena are employed in devices that detect or modulate polarized terahertz radiation on ultrafast timescales. Such novel terahertz device concepts are expected to find use in a wide variety of applications including high-speed terahertz-band communications and molecular fingerprinting.

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来源期刊
Progress in Quantum Electronics
Progress in Quantum Electronics 工程技术-工程:电子与电气
CiteScore
18.50
自引率
0.00%
发文量
23
审稿时长
150 days
期刊介绍: Progress in Quantum Electronics, established in 1969, is an esteemed international review journal dedicated to sharing cutting-edge topics in quantum electronics and its applications. The journal disseminates papers covering theoretical and experimental aspects of contemporary research, including advances in physics, technology, and engineering relevant to quantum electronics. It also encourages interdisciplinary research, welcoming papers that contribute new knowledge in areas such as bio and nano-related work.
期刊最新文献
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