Photon return analysis of a polychromatic laser guide star

被引：10

作者：

Froc, G ^{[1
]}

Rosencher, E ^{[1
]}

Attal-Trétout, B ^{[1
]}

Michau, V ^{[1
]}

机构：

[1] Off Natl Etud & Rech Aerosp, F-92322 Chatillon, France

来源：

OPTICS COMMUNICATIONS | 2000年 / 178卷 / 4-6期

基金：

上海市自然科学基金;

关键词：

D O I：

10.1016/S0030-4018(00)00674-X

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The numbers of UV photons detected in a two photon sodium guide star are calculated in different laser excitation regimes. These values are somewhat smaller than the one obtained for monochromatic beacon. This comes mostly from the small optical cross section of the 3P(3/2) - 4D(5/2) transition and the low radiative efficiency of the 4P(3/2) - 3S(1/2) one. However, usable amount of photons can be obtained for reasonable values of laser power. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：405 / 409

页数：5

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