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Investigation of return photons from sodium laser beacon excited by a 40-watt facility-class pulsed laser for adaptive optical telescope applications
Bian, Qi1,3; Bo, Yong1,2; Zuo, Junwei1,2; Li, Min4; Dong, Ruoxi3,4; Deng, Keran3,4; Zhang DW(张定稳)5; He LP(和丽萍)5; Zong, Qingshuang1,3; Cui, Dafu1,2; Peng, Qinjun1,2; Chen, Hongbin1,2; Xu, Zuyan1,2; Bo, Yong, Email: boyong@tsinghua.org.cn; Zuo, Junwei, Email: jwzuo@mail.ipc.ac.cn
发表期刊SCIENTIFIC REPORTS
2018-06-15
卷号8
DOI10.1038/s41598-018-27576-x
产权排序第5完成单位
收录类别SCI
摘要The brightness of the artificial beacon is one critical performance parameter for adaptive optics. Here, a 40-watt level narrow-linewidth microsecond pulsed yellow laser is produced at 589 nm with a high repetition frequency of 600 Hz and a pulse duration of 120 mu s. An experiment to project the pulse beam up to the sky and measure the fluorescence photon returns of the Na atoms has been held on the 1.8-meter telescope in Lijiang observatory. During the sky test, a laser guide star (LGS) spot is firstly observed with Rayleigh scattering elimination by means of a gateable pulse format. And, the central wavelength of the laser could be accurately locked to be 589.1584 nm with a linewidth of similar to 0.34 GHz to match that of sodium-D-2a line. Optical pumping with circularly polarized light has also been used to increase the brightness of sodium LGS. In order to maximize the return flux, sodium D-2b repumping option is done by an electro-optic modulator with the optimum D-2a-D-2b frequency offset. As a result, a bright sodium LGS with the return flux of 1610 photons/cm(2)/s is achieved, corresponding to similar to 47 photons/cm(2)/s/W of emitted laser power, which represents a significant improvement in terms of brightness reported ever.
项目资助者National Instrumentation Program(2012YQ120048) ; National development Project for Major Scientific Research Facility(ZDYZ2012-2) ; National Key Research and Development Program of China(2016YFB0402003) ; National Nature Science Foundation Program of China(11504389)
语种英语
学科领域天文学
文章类型Article
ISSN2045-2322
URL查看原文
WOS记录号WOS:000435338900062
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
关键词[WOS]SUM-FREQUENCY GENERATION ; D-2 RESONANCE RADIATION ; GUIDE-STAR ; SYNTHETIC BEACON ; MESOSPHERIC SODIUM ; COMPENSATION ; EXCITATION ; LAYER
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12400
专题应用天文研究组
通讯作者Bo, Yong, Email: boyong@tsinghua.org.cn; Zuo, Junwei, Email: jwzuo@mail.ipc.ac.cn
作者单位1.Key Lab of Solid State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
2.Key Lab of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
3.University of Chinese Academy of Sciences, Beijing, 100190, China
4.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China
5.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China
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GB/T 7714
Bian, Qi,Bo, Yong,Zuo, Junwei,et al. Investigation of return photons from sodium laser beacon excited by a 40-watt facility-class pulsed laser for adaptive optical telescope applications[J]. SCIENTIFIC REPORTS,2018,8.
APA Bian, Qi.,Bo, Yong.,Zuo, Junwei.,Li, Min.,Dong, Ruoxi.,...&Zuo, Junwei, Email: jwzuo@mail.ipc.ac.cn.(2018).Investigation of return photons from sodium laser beacon excited by a 40-watt facility-class pulsed laser for adaptive optical telescope applications.SCIENTIFIC REPORTS,8.
MLA Bian, Qi,et al."Investigation of return photons from sodium laser beacon excited by a 40-watt facility-class pulsed laser for adaptive optical telescope applications".SCIENTIFIC REPORTS 8(2018).
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