Configurable circular-polarization-dependent optoelectronic silent state for ultrahigh light ellipticity discrimination  

作　　者：Yonghao Bu Xiansong Ren Jing Zhou Zhenhan Zhang Jie Deng Hangyu Xu Runzhang Xie Tianxin Li Weida Hu Xia Guo Wei Lu Xiaoshuang Chen 

机构地区：[1]State Key Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,500 Yu Tian Road,200083 Shanghai,China [2]University of Chinese Academy of Sciences,19 Yuquan Road,100049 Beijing,China [3]State Key Laboratory for Information Photonics and Optical Communications,School of Electronic Engineering,Beijing University of Posts and Telecommunications,100876 Beijing,China

出　　处：《Light(Science & Applications)》2023年第8期1651-1660,共10页光（科学与应用)（英文版）

基　　金：This work was supported by the National Key Research and Development Program of China(2018YFA0306200,2022YFA1404602);National Natural Science Foundation of China(61975223,91850208,61991442,and 12174036);Hundred Talents Program of the Chinese Academy of Sciences(No.20181214);Key Deployment Projects of the Chinese Academy of Sciences(ZDRW-XH-2021-7-1);Program of Shanghai Academic/Technology Research Leader(22XD1424400);Shanghai Municipal Science and Technology Major Project(Grant No.2019SHZDZX01).

摘　　要：Filterless light-ellipticity-sensitive optoelectronic response generally has low discrimination,thus severely hindering the development of monolithic polarization detectors.Here,we achieve a breakthrough based on a configurable circular-polarization-dependent optoelectronic silent state created by the superposition of two photoresponses with enantiomerically opposite ellipticity dependences.The zero photocurrent and the significantly suppressed noise of the optoelectronic silent state singularly enhance the circular polarization extinction ratio(CPER)and the sensitivity to light ellipticity perturbation.The CPER of our device approaches infinity by the traditional definition.The newly established CPER taking noise into account is 3-4 orders of magnitude higher than those of ordinary integrated circular polarization detectors,and it remains high in an expanded wavelength range.The noise equivalent light ellipticity difference goes below 0.009° Hz-1/2 at modulation frequencies above 1000 Hz by a light power of 281 uW.This scheme brings a leap in developing monolithic ultracompact circular polarization detectors.

关 键 词：circular STATE ordinary 

分 类 号：O175.25[理学—数学]