Stable mid-infrared polarization imaging based on quasi-2D tellurium at room temperature

Lei Tong, Xinyu Huang, Peng Wang, Lei Ye (), Meng Peng, Licong An, Qiaodong Sun, Yong Zhang, Guoming Yang, Zheng Li, Fang Zhong, Fang Wang, Yixiu Wang, Maithilee Motlag, Wenzhuo Wu (), Gary J. Cheng () and Weida Hu ()
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Lei Tong: Huazhong University of Science and Technology
Xinyu Huang: Huazhong University of Science and Technology
Peng Wang: Shanghai Institute of Technical Physics Chinese Academy of Sciences
Lei Ye: Huazhong University of Science and Technology
Meng Peng: Huazhong University of Science and Technology
Licong An: Purdue University
Qiaodong Sun: Huazhong University of Science and Technology
Yong Zhang: Huazhong University of Science and Technology
Guoming Yang: Huazhong University of Science and Technology
Zheng Li: Huazhong University of Science and Technology
Fang Zhong: Shanghai Institute of Technical Physics Chinese Academy of Sciences
Fang Wang: Shanghai Institute of Technical Physics Chinese Academy of Sciences
Yixiu Wang: Purdue University
Maithilee Motlag: Purdue University
Wenzhuo Wu: Purdue University
Gary J. Cheng: Purdue University
Weida Hu: Shanghai Institute of Technical Physics Chinese Academy of Sciences

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract Next-generation polarized mid-infrared imaging systems generally requires miniaturization, integration, flexibility, good workability at room temperature and in severe environments, etc. Emerging two-dimensional materials provide another route to meet these demands, due to the ease of integrating on complex structures, their native in-plane anisotropy crystal structure for high polarization photosensitivity, and strong quantum confinement for excellent photodetecting performances at room temperature. However, polarized infrared imaging under scattering based on 2D materials has yet to be realized. Here we report the systematic investigation of polarized infrared imaging for a designed target obscured by scattering media using an anisotropic tellurium photodetector. Broadband sensitive photoresponse is realized at room temperature, with excellent stability without degradation under ambient atmospheric conditions. Significantly, a large anisotropic ratio of tellurium ensures polarized imaging in a scattering environment, with the degree of linear polarization over 0.8, opening up possibilities for developing next-generation polarized mid-infrared imaging technology.

Date: 2020
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DOI: 10.1038/s41467-020-16125-8

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