用于旋转拉曼白天温度激光雷达的具有低放大自发辐射的拉曼频移KrF激光辐射。

Raman-shifted KrF laser radiation with low amplified spontaneous emission for a rotational Raman daytime-temperature lidar.

作者信息

Luckow F, Voss E, Zeyn J, Lahmann W, Weitkamp C, Michaelis W

出版信息

Opt Lett. 1994 Jul 15;19(14):1049-51. doi: 10.1364/ol.19.001049.

DOI:10.1364/ol.19.001049

PMID:19844529

Abstract

Various configurations of a tunable two-stage KrF laser have been investigated for providing powerful laser pulses with very low amplified spontaneous emission (ASE). The lowest fraction (0.00017%) of ASE was attained with a single-pass amplifier and a phase-conjugate Brillouin mirror. The most suitable application envisaged for the laser source, i.e., remote daytime-temperature measurement by means of rotational Raman scattering, is a dedicated oscillator-amplifier configuration with an ASE of 0.005% at an output of 300 mJ. The very low values of ASE were measured with the aid of a thallium atomic-vapor filter.

摘要

为了提供具有极低放大自发辐射（ASE）的强激光脉冲，人们对可调谐两级KrF激光器的各种配置进行了研究。使用单程放大器和相位共轭布里渊镜可实现最低的ASE分数（0.00017%）。设想该激光源最适合的应用，即通过旋转拉曼散射进行远程日间温度测量，是一种专用的振荡器 - 放大器配置，在输出能量为300 mJ时ASE为0.005%。借助铊原子蒸汽滤波器测量到了极低的ASE值。