Study on optical heterodyne detection with photorefractive adaptive crystal

Changqing Cao; Xiaodong Zeng; Yili Zheng; Zhejun Feng; Wenrui Zhang

doi:10.1117/12.746570

4 January 2008 Study on optical heterodyne detection with photorefractive adaptive crystal

Changqing Cao, Xiaodong Zeng, Yili Zheng, Zhejun Feng, Wenrui Zhang

Proceedings Volume 6839, Nonlinear Optics: Technologies and Applications; 68390P (2008) https://doi.org/10.1117/12.746570
Event: Photonics Asia 2007, 2007, Beijing, China

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.

Citation Download Citation

Changqing Cao, Xiaodong Zeng, Yili Zheng, Zhejun Feng, and Wenrui Zhang "Study on optical heterodyne detection with photorefractive adaptive crystal", Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68390P (4 January 2008); https://doi.org/10.1117/12.746570

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