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Proceedings Paper

Study on optical heterodyne detection with photorefractive adaptive crystal
Author(s): Changqing Cao; Xiaodong Zeng; Yili Zheng; Zhejun Feng; Wenrui Zhang
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Paper Abstract

A photorefractive adaptive optical heterodyne detection system is proposed. Its principle is introduced and typical numerical calculation is illustrated, which includes the reference beam output power and minimum detectable signal power versus system global power ratio, the effect of crystal coupling strength on reference beam output power and minimum detectable signal power, and the minimum detectable signal power versus nonlinear coupling strength. Several key factors which affect the system characteristics strongly are pointed out. In the proposed system, only one photorefractive crystal is used to attain optical heterodyne detection. The system features simple structure, low noise and high responsibility. It also answers two key questions of heterodyne detection: 1) phase distortion; 2) coherent length of light source.

Paper Details

Date Published: 4 January 2008
PDF: 9 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68390P (4 January 2008); doi: 10.1117/12.746570
Show Author Affiliations
Changqing Cao, Xidian Univ. (China)
Xiaodong Zeng, Xidian Univ. (China)
Yili Zheng, Xidian Univ. (China)
Zhejun Feng, Xidian Univ. (China)
Wenrui Zhang, Xidian Univ. (China)

Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)

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