Study on micropolarizer array performance dependences on assembling process

Zeji Chen; Huishan Xiao; Shichun Xu; Enxiang Pu; Qiang Qin; Peng Zhao

doi:10.1117/12.2666390

4 April 2023 Study on micropolarizer array performance dependences on assembling process

Zeji Chen, Huishan Xiao, Shichun Xu, Enxiang Pu, Qiang Qin, Peng Zhao

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126174U (2023) https://doi.org/10.1117/12.2666390
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

Integrating Infrared (IR) Focal Plane Array (FPA) detectors with micropolarizer array achieves viable IR polarimeters. This work systematically studies the extinction ratio (ER) variation tendencies of the polarimeter associated with the assembling process. A 3D Finite-Different Time Domain (FDTD) model was established to characterize the electrical field distributions and extract the concerned parameters. The ER variation caused by the distance between the plane of grating wires and the focal plane is significant, while the one caused by the tilting is moderate. Hereby reasonable assembling strategies can be determined. What’s more, optimization methods have been proposed, which enables preferrable ERs with no additional process difficulties.

Citation Download Citation

Zeji Chen, Huishan Xiao, Shichun Xu, Enxiang Pu, Qiang Qin, and Peng Zhao "Study on micropolarizer array performance dependences on assembling process", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126174U (4 April 2023); https://doi.org/10.1117/12.2666390

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