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Proceedings Paper

Measurement method of noise characterization of highly coherent laser and its applications in coherent sensing and imaging
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Paper Abstract

In coherent test system like sensing, imaging and communication, the coherence of the light source is very important. Our recent advances focusing on the measurement of noise characterization of highly coherent laser and its applications in the coherent test system are reviewed. Using the noise spectrum and statistic characterization to represent the coherence is proposed. And the parallel 3-step phase-shift measurement method from 500nm to 2000nm based on the 120-degree phase difference fiber interferometer is also proposed to measure the noise characterization. Some kinds of typical highly coherent laser applied in the coherent sensing and imaging system are measured. And the impact of their performance on the application system are also discussed.

Paper Details

Date Published: 12 March 2020
PDF: 7 pages
Proc. SPIE 11438, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 114380S (12 March 2020); doi: 10.1117/12.2549217
Show Author Affiliations
Jiejun Zhao, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Fei Yang, Shanghai Institute of Optics and Fine Mechanics (China)
Zhidan Ding, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Rui Wu, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Haiwen Cai, Shanghai Institute of Optics and Fine Mechanics (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11438:
2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology
Guohai Situ; Xun Cao; Wolfgang Osten, Editor(s)

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