Conceptual design of a rotating parallel-mirror-pair interferometer

Qisheng Cai; Bin Xiangli; Qiang Fu; Lulu Qian; Yang Li; Zheng Tan

doi:10.1117/12.2054150

21 February 2014 Conceptual design of a rotating parallel-mirror-pair interferometer

Qisheng Cai, Bin Xiangli, Qiang Fu, Lulu Qian, Yang Li, Zheng Tan

Proceedings Volume 9142, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013; 91420I (2014) https://doi.org/10.1117/12.2054150
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held July-December 2013, 2013, SuZhou, China

Abstract

In the field of Fourier-transform spectroscopy, tilt and shearing problems caused by the moving components in a translational type of spectrometer reduce the quality of the interferogram dramatically. While, the spectrometer based on rotational motion can avoid these problems. In this paper, a novel rotational type of interferometer, called rotating parallel-mirror-pair interferometer (RPMPI), is presented. Its principle and properties are studied. This interferometer consists of one beam splitter, two fixed flat mirrors, and one rotating wedged parallel-mirror-pair (PMP). The optical path difference (OPD) is obtained by the rotational motion of the PMP. Factors that affect the maximum OPD include the wedged angle of the rotating PMP, the distance between the two parallel mirrors, the direction of the incident ray, and the range of rotating angle. This interferometer can operate either in swinging mode or continuous rotary mode depending on the range of the rotating angle. In swinging mode, the OPD function is linear. In continuous rotary mode, the sampling efficiency is higher and it can operate as an ultra rapid scanning interferometer.

Citation Download Citation

Qisheng Cai, Bin Xiangli, Qiang Fu, Lulu Qian, Yang Li, and Zheng Tan "Conceptual design of a rotating parallel-mirror-pair interferometer", Proc. SPIE 9142, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013, 91420I (21 February 2014); https://doi.org/10.1117/12.2054150

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KEYWORDS

Mirrors

Interferometers

Beam splitters

Spectroscopy

Retroreflectors

Sensors

Zemax

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