Exact optical path difference and complete performance analysis of a spectral zooming imaging spectrometer

Author:

Zhang Xiangzhe,Huang LiqingORCID,Zhu Jingping,Zhang Ning1,Zong Kang,Zhai Lipeng,Zhang Yu,Cai Yakun2,Wang Huimin

Affiliation:

1. Xi’an Institute of Optics and Precision Mechanics of CAS

2. Henan University of Engineering

Abstract

The optical path difference (OPD) equations of the dual Wollaston prisms (DWP) with an adjustable air gap (AG) are derived by the wave normal tracing method, which is suitable for arbitrary incidence plane and angle. The spatial distribution of the OPD for various AG is presented. The validity of the OPD equation is verified by comparing the calculated interferograms with experimentally observed one. The performance of a novel static birefringent Fourier transform imaging spectrometer (SBFTIS) based on the DWP is investigated. The spectral resolution can be adjusted by changing the AG and the field of view can reach 10.0°, which is much larger than that predicted by our previous work. The results obtained in this article provide a theoretical basis for completely describing the optical transmission characteristic of the DWP and developing the high-performance birefringent spectral zooming imaging spectrometer.

Funder

National Natural Science Foundation of China

Key R&D project in the Shaanxi Province of China

National Key Research and Development Program of China

National Major Scientific Instruments and Equipments Development Project of National Natural Science Foundation of China

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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