A sodium laser guide star coupling efficiency measurement method

	A sodium laser guide star coupling efficiency measurement method
	Feng, Lu 1; Shen, Zhi-Xia 1; Xue, Suijian 1; Li, Yang-Peng 1; Jin, Kai 2; Otarola, Angel 4; Bo, Yong 3; Zuo, Jun-Wei 3; Bian, Qi 3; Wei, Kai 2
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2016-09-01
卷号	16 期号:9
关键词	instrumentation: adaptive optics methods: observational atmospheric effects
英文摘要	A large telescope's adaptive optics (AO) system requires one or more bright artificial laser guide stars to improve its sky coverage. The recent advent of a high power sodium laser is perfect for such application. However, besides the output power, other parameters of the laser also have a significant impact on the brightness of the generated sodium laser guide star, mostly in non-linear relationships. When tuning and optimizing these parameters it is necessary to tune based on a laser guide star generation performance metric. Although return photon fluxis widely used, variability of the atmosphere and sodium layer makes it difficult to compare results from different sites or even within a short time period for the same site. A new metric, coupling efficiency, is adopted in our field tests. In this paper, we will introduce our method for measuring the coupling efficiency of a 20W class pulse sodium laser for AO application during field tests that were conducted during 2013-2015.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000385995800012
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6894]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China 3.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China 4.Thirty Meter Telescope Corp, Pasadena, CA USA
推荐引用方式 GB/T 7714	Feng, Lu,Shen, Zhi-Xia,Xue, Suijian,et al. A sodium laser guide star coupling efficiency measurement method[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(9).
APA	Feng, Lu.,Shen, Zhi-Xia.,Xue, Suijian.,Li, Yang-Peng.,Jin, Kai.,...&Hu, Jing-Yao.(2016).A sodium laser guide star coupling efficiency measurement method.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(9).
MLA	Feng, Lu,et al."A sodium laser guide star coupling efficiency measurement method".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.9(2016).