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

doi:10.1117/12.3019465

30 April 2024 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, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Imaging Systems; 1315516 (2024) https://doi.org/10.1117/12.3019465
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China

Abstract

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.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yu Zhang, Yangyang Liu, Jianwei Wang, Yinhui Tang, Peidong He, Xinwen Chen, and Qunbo Lv "Joint interference imaging spectral super-resolution technology based on FPI modulation", Proc. SPIE 13155, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Imaging Systems, 1315516 (30 April 2024); https://doi.org/10.1117/12.3019465

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KEYWORDS

Super resolution

Modulation

Spectral resolution

Optical path differences

Fourier transforms

Imaging systems

Spectroscopy

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