polarized infrared imaging under scattering with degree of linear polarization over 0.8
Source PDF · page 1RESEARCH PAPER
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, Weida Hu
Research context
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.
Source & review
Contains findings linked to source PDF pages.
quasi-2D tellurium
Source PDF · page 2photoresponsivity anisotropic ratio about 8 at 2.3 μm
Source PDF · page 2Cite / 引用
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, Weida Hu. Stable mid-infrared polarization imaging based on quasi-2D tellurium at room temperature. Nature Communications (2020). https://doi.org/10.1038/s41467-020-16125-8
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