Mach-Zehnder optical interferometric polarimeter using two reference beams with different heterodyne frequency

Hongbing Liu; Yudong Li; Guoxin Cui; Yanfeng Zhang; Jing Chen; Jingjun Xu; Qian Sun

doi:10.1117/12.755535

28 November 2007 Mach-Zehnder optical interferometric polarimeter using two reference beams with different heterodyne frequency

Hongbing Liu, Yudong Li, Guoxin Cui, Yanfeng Zhang, Jing Chen, Jingjun Xu, Qian Sun

Author Affiliations +

Proceedings Volume 6834, Optical Design and Testing III; 68340Q (2007) https://doi.org/10.1117/12.755535
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Optical heterodyne interferometry has been widely used in precision measurements. In this paper, we develop a modified Mach-Zehnder interferometer for measurement of light polarization state in real time by using two heterodyne frequency reference beams. Two collinear linearly polarized reference beams with different frequency, ω_p and ω_s, interfere simultaneously with the measured beam with frequency ω₀. The polarization directions of the two reference beams are perpendicular to each other. The light intensity of the interference fringe is monitored by a photodetector. The heterodyne signals, ω_p and ω_s - ω₀, give the amplitudes and the phase difference of the orthogonal polarization components of the measured beam projected to the polarization directions of the reference beams. We analyze the beat frequency signals by Fourier and inverse Fourier transform and realize accurate measurement of polarization state experimentally.

Citation Download Citation

Hongbing Liu, Yudong Li, Guoxin Cui, Yanfeng Zhang, Jing Chen, Jingjun Xu, and Qian Sun "Mach-Zehnder optical interferometric polarimeter using two reference beams with different heterodyne frequency", Proc. SPIE 6834, Optical Design and Testing III, 68340Q (28 November 2007); https://doi.org/10.1117/12.755535

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KEYWORDS

Polarization

Optical testing

Heterodyning

Polarimetry

Interferometry

Photodetectors

Beam splitters

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