polarization-modulated infrared optical communication and artificial vision with about 99% recognition accuracy
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Versatile on-chip polarization-sensitive detection system for optical communication and artificial vision
Zhilin Liu, Mingxiu Liu, Liujian Qi, Nan Zhang, Bin Wang, Xiaojuan Sun, Rongjun Zhang, Dabing Li, Shaojuan Li
Research context
Abstract Polarization is an important attribute of light and can be artificially modulated as a versatile information carrier. Conventional polarization-sensitive photodetection relies on a combination of polarizing optical elements and standard photodetectors, which requires a substantial amount of space and manufacturing expenses. Although on-chip polarized photodetectors have been realized in recent years based on two-dimensional (2D) materials with low-symmetry crystal structures, they are limited by the intrinsic anisotropic property and thus the optional range of materials, the operation wavelength, and more importantly, the low anisotropic ratio, hindering their practical applications. In this work, we construct a versatile platform that transcends the constraints of material anisotropy, by integrating WSe2-based photodetector with MoS2-based field-effect transistor, delivering high-performance broadband polarization detection capability with orders of magnitude improvement in anisotropic ratio and on/off ratio. The polarization arises from hot electron injection caused by the plasmonic metal electrode and is amplified by the transistor to raise the anisotropic ratio from 2
Source & review
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on-chip system integrating a WSe2 photodetector with a MoS2 field-effect transistor
Source PDF · page 1infrared anisotropic ratio increased from 2 to over 60 with on/off ratio over 10^3
Source PDF · page 1Cite / 引用
Zhilin Liu, Mingxiu Liu, Liujian Qi, Nan Zhang, Bin Wang, Xiaojuan Sun, Rongjun Zhang, Dabing Li, Shaojuan Li. Versatile on-chip polarization-sensitive detection system for optical communication and artificial vision. Light: Science & Applications (2025). https://doi.org/10.1038/s41377-025-01744-x
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