Efficient modeless laser for a mesospheric sodium laser guide star

被引：40

作者：

Pique, JP ^{[1
]}

Farinotti, S ^{[1
]}

机构：

[1] Univ Grenoble 1, Spectrometrie Phys Lab, UMR 5588, Ctr Nacl Rech Sci, F-38402 St Martin Dheres, France

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2003年 / 20卷 / 10期

关键词：

D O I：

10.1364/JOSAB.20.002093

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Within the framework of a laser guide star and in order to solve the major problem of saturation of the sodium atom, we present an "all-optical" modeless laser that excites all sodium velocity classes. A theoretical and experimental study of the excitation of the sodium D-2 line is presented in three cases: a single-mode laser of linewidth 1 MHz and modeless lasers of linewidths 3 and 4.5 GHz. The best result is obtained when the linewidth matches the Doppler-hyperfine sodium D-2-line profile. By comparison with a single-mode laser excitation, we show that our modeless-laser sodium D-2 star becomes six times brighter. (C) 2003 Optical Society of America.

引用

页码：2093 / 2101

页数：9

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