One-shot detection of light ellipticity using a two-dimensional quantum material device
Abstract
Detection of light ellipticity is of crucial importance for target imaging and recognition in complex scenarios. However, it has been challenging to achieve one-shot detection of light ellipticity by a single conventional optoelectronic device, due to coupling between light intensity and polarization. Here, we realize one-shot detection of light ellipticity by using a single four-terminal valley Hall device based on monolayer MoS2 quantum material. The device can decouple the light intensity and the elliptical polarization and enable simultaneous detection of the light intensity and the elliptical polarization by using photoconduction and valley Hall effects. We show that the light ellipticity can be directly detected by measuring the Hall resistance of the device, which is defined as the ratio between the Hall voltage and the photocurrent. Furthermore, we demonstrate that our proposed approach can be used for detecting microplastics present in soil at a higher recognition precision than conventional approaches. Our work highlights the potential of exploiting unique properties of 2D quantum materials for multi-dimensional perception of optical information.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (15)
Zhiyi Zhang
College of Energy Materials and Chemistry, College of Chemistry and Chemical Engineering
Mingxue Ren
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University 2 , Nanjing,
Yuekun Yang
Wentao Yu
Institute of Interdisciplinary Physical Sciences, School of Physics
Qian Zhang
Zhaoming Liang
Institute of Brain-Inspired Intelligence, National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University 1 , Nanjing,
Yi Kong
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University 2 , Nanjing,
Shuang Wang
Pengfei Wang
Key Laboratory of Photochemical Conversion and Optoelectronic Materials
Zhu-An Li
Institute of Brain-Inspired Intelligence, National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University 1 , Nanjing,
Chen Pan
Department of Experimental Genome Research, Research Institute for Microbial Diseases, The University of Osaka
Bin Cheng
Department of Periodontology, Hospital of Stomatology, Sun Yat-Sen University
Shi-Jun Liang
Xinyi Cui
Feng Miao