中国激光, 1993, 20 (6): 401, 网络出版: 2007-12-07
染料放大器的ASE和飞秒脉冲放大
ASE of dye medium in a DLA and fs pulse amplification
染料放大器 放大的自发辐射 储能 增益 系际交叉 dye laser amplifier amplified spontaneous emission store energy intersystem crossing
摘要
分析了染料放大器(DLA)的放大的自发辐射(ASE)的分布、上能级以及三重态粒子数分布。用数学方法模拟计算了泵浦作用时非饱和情形下染料分子的储能和飞秒脉冲的放大。我们认为,设计一个染料放大器必须考虑三重态积累对分子储能的影响。用调Q倍频Nd:YAG脉冲同步泵浦染料二级放大器放大飞秒脉冲,得到的第一、二级放大倍数分别为1000和60,对于第一级放大,计算结果与实验结果基本相符。
Abstract
The distributions of Amplified Spontaneous Emission (ASE) in the Dye Laser Amplifier (DLA) as well as the excited level and triplet state populations of the dye have been reported. The store energy of dye molecules and the amplification of fs pulses in condition of under saturable energy were calculated by mathematical simulation. According to our analyzing, the decreasing of store energy caused by triplet state absorbing must be taken into account when designing a DLA. Experimentally with Q-switched Nd:YAG synchronouly pumped two-stage dye laser amplifier, we have got the amplification gain of 1000 and 60 for the first and the second stage respectively. To the first stage, our calculation result can be fit well with the experiment.
肖纲要, 何慧娟, 沈晋汇, 刘玉璞, 张影华, 陆培华, 王之江. 染料放大器的ASE和飞秒脉冲放大[J]. 中国激光, 1993, 20(6): 401. 肖纲要, 何慧娟, 沈晋汇, 刘玉璞, 张影华, 陆培华, 王之江. ASE of dye medium in a DLA and fs pulse amplification[J]. Chinese Journal of Lasers, 1993, 20(6): 401.
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