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Improving sodium laser guide star brightness by polarization switching
Fan, Tingwei; Zhou, Tianhua; Feng, Yan; feng@siom.ac.cn
2016
发表期刊Sci Rep
卷号6
摘要Optical pumping with circularly polarized light has been used to enhance the brightness of sodium laser guide star. But the benefit is reduced substantially due to the precession of sodium atoms in geomagnetic field. Switching the laser between left and right circular polarization at the Larmor frequency is proposed to improve the return. With ESO's laser guide star system at Paranal as example, numerical simulation shows that the return flux is increased when the angle between geomagnetic field and laser beam is larger than 60 degrees, as much as 50% at 90 degrees. The proposal is significant since most astronomical observation is at angle between 60 degrees and 90 degrees and it only requires a minor addition to the delivery optics of present laser system.
文章类型Article
部门归属空间
DOI10.1038/srep19859
收录类别SCI
WOS记录号WOS:000368662200001
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.siom.ac.cn/handle/181231/28391
专题空间激光信息技术研究中心
通讯作者feng@siom.ac.cn
作者单位中国科学院上海光学精密机械研究所
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GB/T 7714
Fan, Tingwei,Zhou, Tianhua,Feng, Yan,et al. Improving sodium laser guide star brightness by polarization switching[J]. Sci Rep,2016,6.
APA Fan, Tingwei,Zhou, Tianhua,Feng, Yan,&feng@siom.ac.cn.(2016).Improving sodium laser guide star brightness by polarization switching.Sci Rep,6.
MLA Fan, Tingwei,et al."Improving sodium laser guide star brightness by polarization switching".Sci Rep 6(2016).
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