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Proceedings Paper

Mach-Zehnder optical interferometric polarimeter using two reference beams with different heterodyne frequency
Author(s): Hongbing Liu; Yudong Li; Guoxin Cui; Yanfeng Zhang; Jing Chen; Jingjun Xu; Qian Sun
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Paper 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, ωp and ωs, 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, ωp and ωs - 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.

Paper Details

Date Published: 28 November 2007
PDF: 7 pages
Proc. SPIE 6834, Optical Design and Testing III, 68340Q (28 November 2007); doi: 10.1117/12.755535
Show Author Affiliations
Hongbing Liu, Nankai Univ. (China)
Yudong Li, Nankai Univ. (China)
Guoxin Cui, Nankai Univ. (China)
Yanfeng Zhang, Nankai Univ. (China)
Jing Chen, Nankai Univ. (China)
Jingjun Xu, Nankai Univ. (China)
Qian Sun, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 6834:
Optical Design and Testing III
Yongtian Wang; Theo T. Tschudi; Jannick P. Rolland; Kimio Tatsuno, Editor(s)

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