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Proceedings Paper

Dye lasers used in CSSAR sodium fluorescence Doppler lidar
Author(s): Zhaoai Yan; Xiong Hu; Shangyong Guo; Yongqiang Cheng
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Paper Abstract

Mesopause wind and temperature is of great importance for the research on atmospheric dynamics. Center for Space Science and Applied Research, Chinese Academy of Sciences (CSSAR) has developed the first sodium fluorescence Doppler lidar in China to probe the wind and temperature in the mesopause region (about 75-115km). This lidar system employs a narrowband CW dye laser and a pulsed dye amplifier to excite sodium atoms existing in the mesopause region, therefore to induce resonance fluorescence. Atmospheric wind and temperature profiles can be deduced from the backscattered fluorescence collected by lidar receiver. The CW dye laser used in this lidar has narrowband linewidth ~100KHz with the help of some frequency-selective elements. Pound-Drever-Hall technique and Doppler-free saturated spectroscopy technique are applied in this laser to achieve long term laser frequency stabilization. The laser frequency is locked at sodium D2a line with ~± 2MHz precision for hours. In order to obtain enough energy pulsed laser sent to mesopause region, a pulsed dye amplifier has been developed to amplify the CW dye laser's power. It has three amplification stages, output ~1.5W, 30Hz 589nm pulsed laser when the CW laser's power is about 200mW.

Paper Details

Date Published: 22 August 2011
PDF: 6 pages
Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81924O (22 August 2011); doi: 10.1117/12.904139
Show Author Affiliations
Zhaoai Yan, Ctr. for Space Science and Applied Research (China)
Xiong Hu, Ctr. for Space Science and Applied Research (China)
Shangyong Guo, Ctr. for Space Science and Applied Research (China)
Yongqiang Cheng, Ctr. for Space Science and Applied Research (China)


Published in SPIE Proceedings Vol. 8192:
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging
Farzin Amzajerdian; Weibiao Chen; Chunqing Gao; Tianyu Xie, Editor(s)

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