Mr. YinHui Tang Profile

YinHui Tang

at Ciomp Cas

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Proceedings Article | 30 April 2024 Paper

Joint interference imaging spectral super-resolution technology based on FPI modulation

Yu Zhang, Yangyang Liu, Jianwei Wang, Yinhui Tang, Peidong He, Xinwen Chen, Qunbo Lv

Proceedings Volume 13155, 1315516 (2024) https://doi.org/10.1117/12.3019465

KEYWORDS: Super resolution, Modulation, Spectral resolution, Optical path differences, Fourier transforms, Spectroscopy, Imaging systems, Hyperspectral imaging, Fabry–Perot interferometry, Sensors

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The spectral resolution of interference spectral imaging technology is difficult to improve by directly increasing the maximum OPD due to limitations such as luminous flux and system stability. Studies have shown that the Fabry-Perot interferometer (FPI) can be added as a spectral resampling element to an interference hyperspectral imager to achieve spectral super-resolution, but it is more demanding on the parameters of the FPI optical element in terms of system accuracy and stability. This paper proposes a new interferometric hyperspectral imager and FPI joint interference spectrum super-resolution method. This method uses dual interferometers to perform FPI periodic modulation of the target spectral information. Then, the high-frequency interference information displacement generated after modulation is analyzed and restored to improve the spectral resolution. Experimental results show that this method can obtain spectral super-resolution information through multi-component joint interference imaging, increasing the spectral resolution to three times, and theoretically achieving higher spectral super-resolution. The optical system of this system is compact in structure, has relatively little impact on luminous flux, system complexity and stability, and has low requirements on parameters such as FPI spacing and reflectivity. This article provides a new solution for interferometric imaging hyperspectral super-resolution technology to break through the maximum OPD limit.

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