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题名:
Photon Return On-Sky Test of Pulsed Sodium Laser Guide Star with D-2b Repumping
作者: Jin, Kai1,2,3; Wei, Kai1,2; Feng, Lu4; Bo, Yong5; Zuo, JunWei5; Li, Min1,2; Fu, HanChu1,2,3; Dai, XiaoLin1,2,3; Bian, Qi5; Yao, Ji5; Xu, Chang5; Wang, ZhiChao5; Peng, QingJun5; Xue, XiangHui6; Cheng, XueWu7; Rao, ChangHui1,2; Xu, ZuYan5; Zhang, YuDong1,2
刊名: PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期: 2015-08-01
卷号: 127, 期号:954, 页码:749-756
DOI: 10.1086/682672
文章类型: Article
英文摘要: Sodium laser guide star (LGS) system has become one of the critical components in modern astronomical adaptive optics system (AOS), especially for the next-generation extremely large telescopes, such as the Thirty Meter Telescope and the European Extremely Large Telescope. Since the wavefront detection performance of AOS is directly related to the brightness of LGS, it is important for AOS to maximize its photon generation efficiency by all means. Sodium D-2b line repumping is such a technique that can greatly increase the returned photons for either sodium continuous wave (CW) laser or pulsed laser. This technique has been studied theoretically and field tested with a 20 W CW laser by European Southern Observatory team. However, field test results of a 20 W class pulsed laser with D-2b repumping have not been reported yet. In this paper, our latest field test results with theoretical comparison of D-2b repumping with a 20 W quasi-continuous wave (QCW) pulsed laser will be presented. With a linearly polarized beam, approximate 40% photon return enhancement was achieved when 10% of laser power was detuned to D-2b line, which agreed well with results from a rate equation-based Monte Carlo photon return simulation program. Both experiment and simulation results indicate that with a higher laser intensity projected at the sodium layer, the D-2b repumping will be more effective.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: ADAPTIVE-OPTICS ; EXCITATION ; SYSTEM
收录类别: SCI
语种: 英语
WOS记录号: WOS:000359920600006
ISSN号: 0004-6280
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3699
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
5.Chinese Acad Sci, Tech Inst Phys & Chem, Res Ctr Laser Phys & Tech, Beijing 100190, Peoples R China
6.Univ Sci & Technol China, Hefei 230026, Peoples R China
7.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China

Recommended Citation:
Jin, Kai,Wei, Kai,Feng, Lu,et al. Photon Return On-Sky Test of Pulsed Sodium Laser Guide Star with D-2b Repumping[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2015,127(954):749-756.
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