Switchable Unipolar‐Barrier Van der Waals Heterostructures with Natural Anisotropy for Full Linear Polarimetry Detection

Autor: Wenjie Deng, Mingjin Dai, Chongwu Wang, Congya You, Wenduo Chen, Song Han, Jiayue Han, Fakun Wang, Ming Ye, Song Zhu, Jieyuan Cui, Qi Jie Wang, Yongzhe Zhang
Přispěvatelé: School of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences, Beijing University of Technology, Centre for OptoElectronics and Biophotonics, Centre for Disruptive Photonic Technologies (CDPT)
Rok vydání: 2022
Předmět:
Zdroj: Advanced Materials. 34:2203766
ISSN: 1521-4095
0935-9648
6192-2005
Popis: Polarization-resolved photodetection in a compact footprint is of great interest for ultraminiaturized polarimeters to be used in a wide range of applications. However, probing the states of polarization (SOP) in materials with natural anisotropy are usually weak, limited by the material's natural dichroism or diattenuation. Here, a twisted unipolar-barrier van der Waals heterostructure (vdWH) to construct a bias-switchable polarization detection for retrieval of full SOP (from 0 to 180°) for linear polarized incident light is reported. As a demonstration example, this study realizes the concept in a b-AsP/WS2 /b-AsP vdWH relying on the natural anisotropic properties of the materials without using additional plasmonic/metasurface nanostructures to realize linear polarimetry in the mid-infrared range. Polarimetric imaging is further demonstrated with the developed linear polarimetry by directly displaying the Jones-vector-described SOP distribution of certain target object. This method, with the capabilities of detecting full linear SOP, is promising for the next-generation on-chip miniaturized polarimeters. Agency for Science, Technology and Research (A*STAR) National Research Foundation (NRF) Submitted/Accepted version This research was supported by the National Natural Science Foundation of China (NSFC, Grant Nos. 61922005 and U1930105) and Beijing Natural Science Foundation (BNSF, Grant No. JQ20027). This research was also supported partially by National Research Foundation Singapore programme (NRF-CRP19-2017-01 and NRF-CRP22-2019-0007) and A*STAR Grant Nos. A18A7b0058 and A2090b0144.
Databáze: OpenAIRE
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