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Dye lasers used in CSSAR sodium fluorescence Doppler lidar
Yan, Zhaoai; Hu, Xiong; Guo, Shangyong; Cheng, Yongqiang; Yan, ZA (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
Department空间环境部
Source PublicationINTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: LASER SENSING AND IMAGING AND BIOLOGICAL AND MEDICAL APPLICATIONS OF PHOTONICS SENSING AND IMAGING
2011
Pages81924O
Language英语
ISSN0277-786X
ISBN978-0-81948-833-6
AbstractMesopause 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 similar to 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 similar to +/- 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 similar to 1.5W, 30Hz 589nm pulsed laser when the CW laser's power is about 200mW.; 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 similar to 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 similar to +/- 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 similar to 1.5W, 30Hz 589nm pulsed laser when the CW laser's power is about 200mW.
KeywordDye Laser Pulsed Dye Amplifier Sodium Fluorescence Doppler Lidar Mesopause Region
Conference NameInternational Symposium on Photoelectronic Detection and Imaging 2011 - Laser Sensing and Imaging and Biological and Medical Applications of Photonics Sensing and Imaging
Conference DateMAY 24-26, 2011
Conference PlaceBeijing, PEOPLES R CHINA
Indexed ByEI ; CPCI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/2868
Collection空间环境部
Corresponding AuthorYan, ZA (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Yan, Zhaoai,Hu, Xiong,Guo, Shangyong,et al. Dye lasers used in CSSAR sodium fluorescence Doppler lidar[C]. BELLINGHAM:SPIE-INT SOC OPTICAL ENGINEERING,2011:81924O.
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