A compact LWIR Fourier transform imaging spectrometer employing a variable gap Fabry-Perot interferometer

Fang Zhang; Jiaobo Gao; Fang Liu; Yujie Zhao; Yawei Zheng; Lei Zhang

doi:10.1117/12.2246591

25 October 2016 A compact LWIR Fourier transform imaging spectrometer employing a variable gap Fabry-Perot interferometer

Fang Zhang, Jiaobo Gao, Fang Liu, Yujie Zhao, Yawei Zheng, Lei Zhang

Author Affiliations +

Proceedings Volume 10156, Hyperspectral Remote Sensing Applications and Environmental Monitoring and Safety Testing Technology; 101560W (2016) https://doi.org/10.1117/12.2246591
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

With unique working principle and spectral characteristic, the long wave infrared (LWIR) interferometric spectral imaging is a popular technology with wide application in many fields. In order to miniaturize and light the instrument, a new method of LWIR spectral imaging system based on a variable gap Fabry-Perot (FP) interferometer is researched. With the system working principle analyzed, theoretically, it is researched that how to make certain the primary parameter, such as, the reflectivity of the two interferometric cavity surfaces and the wedge angle of interferometric cavity. A prototype is developed and good experimental results of blackbody and polypropylene film are obtained. The research shows that besides high throughput and high spectral resolution, the advantage of miniaturization is also simultaneously achieved in this method.

Citation Download Citation

Fang Zhang, Jiaobo Gao, Fang Liu, Yujie Zhao, Yawei Zheng, and Lei Zhang "A compact LWIR Fourier transform imaging spectrometer employing a variable gap Fabry-Perot interferometer", Proc. SPIE 10156, Hyperspectral Remote Sensing Applications and Environmental Monitoring and Safety Testing Technology, 101560W (25 October 2016); https://doi.org/10.1117/12.2246591

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KEYWORDS

Fabry–Perot interferometry

Long wavelength infrared

Fourier transforms

Imaging spectroscopy

Imaging systems

Infrared imaging

Infrared radiation

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