Stacked polarimeters with twisted black phosphorus

分类： 光学 >> 量子光学 提交时间： 2023-02-19

Yifeng Xiong Yushu Wang Runze Zhu Haotian Xu Chenhui Wu Jin-hui Chen Yang Ma Yuan Liu Ye Chen K. Watanabe T. Taniguchi Mengzhu Shi Xianhui Chen Yanqing Lu Peng Zhan Yufeng Hao Fei Xu

摘要： The real-time, in-line analysis of light polarization is critical in optical communication networks, which suffers from the complex systems with numerous bulky opto-electro-mechanical elements tandemly arranged along optical path. Here, we propose a fiber-integrated polarimeter with nano-thickness by vertically stacking three two-dimensional (2D) materials based photodetection units. We demonstrate a self-power-calibrated, ultrafast, unambiguous detection of linear (LP) and circular polarized (CP) light according to the symmetry broken induced linear photogalvanic effects (LPGE) and circular photogalvanic effects (CPGE) in black phosphorous (BP) units, which are twistedly stacked to substitute traditional mechanical rotation of polarizers. As a demonstration, we achieve Hadamard single-pixel polarimetric imaging by the polarimeter to recognize the polarization distributions, showing potential in high-speed polarization-division-multiplexed imaging and real-time polarized endoscopy. This work provides a new strategy for next-generation ultracompact optical and optoelectronic systems, and guides a way for developing high-resolution arrayed devices with multifunctional pixels.

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