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可见到近红外旋光光线的梯度-Metasurface接触光探测器

Chenglin He¹, Zilan Tang¹, Chunhua Wang¹

¹Hunan Institute of Optoelectronic Integration and Key Laboratory for MicroNano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|March 17, 2025

概括

这项研究引入了一种用于循环偏光 (CPL) 的新光探测器,该光探测器具有高灵敏度和广泛的检测范围. 这一突破推动了紧的极度测量和光通信系统的发展.

科学领域:

光子学和光电学和光电子学.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

集成的循环偏光 (CPL) 探测器对于紧的极度计至关重要,但现有技术的灵敏度低,带宽有限.
以前使用天然材料或共振纳米结构的CPL探测器显示出弱极化灵敏度,并受到其他光极化状态的影响.

研究的目的:

开发一种新的,高性能的,用于循环偏光 (CPL) 的紧光电探测器.
克服现有的CPL探测器的局限性,包括低灵敏度,窄带宽和易受其他极化状态的影响.

主要方法:

一个梯度-metasurface-contact CPL光探测器的演示,该光探测器将InSe片与CPL选择性metasurface接触器集成在一起.
由CPL依赖的单向表面等离子体波驱动的不对称结接口的形成.
在零偏差下运行以产生矢量光电流.

主要成果:

取得了高的CPL歧视比率,大约为1.6 x 10^4.4.
显示了500至1100nm的宽带响应.
已证明对非CPL字段组件的免疫力,并在多值逻辑系统中成功实现解码CPL加密信号.

结论:

超表面接触工程为光特性检测提供了一个新的范式,特别是对于CPL.
开发的光电探测器为先进的集成光电子系统为芯片上的极化检测铺平了道路.
这项技术在紧极度测量,光学加密和生物/医学成像等领域有着潜在的应用.

关键词:

循环极化光是指循环的极化光.梯度的 metasurface 接触接触摄影探测器的光检测器塑制剂的使用方法

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相关概念视频

UV–Vis Spectrometers

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.