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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
Source PublicationSCIENTIFIC REPORTS
2018-06-15
Volume8
DOI10.1038/s41598-018-27576-x
Contribution Rank第5完成单位
Indexed BySCI
Abstract

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.

Funding ProjectNational 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]
Funding OrganizationNational 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]
Language英语
Subject Area天文学 ; 天体测量学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATURE PUBLISHING GROUP
Publication PlaceMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
ISSN2045-2322
URL查看原文
WOS IDWOS:000435338900062
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS KeywordSUM-FREQUENCY GENERATION ; D-2 RESONANCE RADIATION ; GUIDE-STAR ; SYNTHETIC BEACON ; MESOSPHERIC SODIUM ; COMPENSATION ; EXCITATION ; LAYER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12400
Collection应用天文研究组
Corresponding AuthorBo, Yong; Zuo, Junwei
Affiliation1.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
Recommended Citation
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.,...&Xu, Zuyan.(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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