具有电可调偏振灵敏度的片上超表面介导MoTe2光电探测器

IF 8 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Ruizhi Li, Xinlei Zhang, Fan Zhong, Yuanfang Yu, Peidong Yan, Dangyuan Lei, Junpeng Lu, Zhenhua Ni
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引用次数: 0

摘要

具有可调偏振灵敏度的光电探测器在光通信信号解码、偏振加密信息提取、偏振变化环境监测等方面发挥着重要作用。超表面在偏振光探测器中得到了广泛的应用,而不同偏振入射下的响应遵循一种确定的一致的对应关系。本文提出了一种由MoTe2和金超表面组成的电可调谐偏振光电探测器,用于片上偏振敏感近红外(900 - 1200nm)探测。通过接触工程和电调谐,实现了高度可调谐的肖特基势垒。这使得光电转换的调制通过激发表面等离子激元的极化,这反过来又允许在一个固定的超表面的线偏振度从0.2到1.0的最终值连续调整。结果概述了一种实现偏振相关电可调谐响应的范例,这对于集成光学中的片上信息处理很有希望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

On-Chip Metasurface-Mediated MoTe2 Photodetector with Electrically Tunable Polarization-Sensitivity

On-Chip Metasurface-Mediated MoTe2 Photodetector with Electrically Tunable Polarization-Sensitivity

Photodetectors with tunable polarization sensitivity play a significant role in decoding signals in optical communications, extracting polarization-encrypted information, and the environmental monitoring of polarization variations. Metasurfaces are widely used in polarized photodetectors, while the responses for different polarization incidences follow a determinable and consistent correspondence. In this paper, an electrically tunable polarization photodetector composed of MoTe2 and gold metasurface is proposed for on-chip polarization-sensitive near-infrared (900–1200 nm) detection. Through contact engineering and electro-tuning, highly-tunable Schottky barriers are achieved. This enables the modulation of photoelectric conversion via the excitation of surface plasmon polaritons, which in turn allows for continuous adjustment on the degree of linear polarization of a settled metasurface ranging from 0.2 to an ultimate value of 1.0. The results outline a paradigm to achieve a polarization-dependent electrically tunable response, which is promising for on-chip information processing in integrated optics.

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来源期刊
Advanced Optical Materials
Advanced Optical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS
CiteScore
13.70
自引率
6.70%
发文量
883
审稿时长
1.5 months
期刊介绍: Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.
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