Computational spectropolarimetry with a tunable liquid crystal metasurface

作     者：Yibo Ni Chen Chen Shun Wen Xinyuan Xue Liqun Sun Yuanmu Yang 

作者机构：State Key Laboratory of Precision Measurement Technology and InstrumentsDepartment of Precision InstrumentTsinghua UniversityBeijing 100084China 

出 版 物：《eLight》 (e光学（英文）)

年 卷 期：2022年第2卷第1期

页      面：291-300页

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China(61975251,62135008) Guoqiang Institute,Tsinghua University 

主　　题：Tunable metasurface Liquid crystal Computational spectropolarimetry 

摘      要：While conventional photodetectors can only measure light intensity,the vectorial light field contains much richer information,including polarization and spectrum,that are essential for numerous applications ranging from imaging to ***,the simultaneous measurement of multi-dimensional light field information typically requires the multiplexing of dispersive or polarization-selective elements,leading to excessive system ***,we demonstrate a near-infrared spectropolarimeter based on an electrically-tunable liquid crystal *** tunable metasurface,which acts as an encoder of the vectorial light field,is tailored to support high-quality-factor guided-mode resonances with diverse and anisotropic spectral features,thus allowing the full Stokes parameters and the spectrum of the incident light to be computationally reconstructed with high *** concept of using a tunable metasurface for multi-dimensional light field encoding may open up new horizons for developing vectorial light field sensors with minimized size,weight,cost,and complexity.