摘要
采用脉冲分割模型详细研究了任意空间和时间分布波形的激光通过任意增益分布脉冲激光放大器后，激光脉冲波形和能量密度的变化，并将可用总损耗Ｔ表示的集中损耗近似和薄片损耗模型计算结果作了比较，给出了集中损耗近似成立的条件。
By using the Pulse-sequence model, changes in Pulse profiles and fluence of laser heams of arbitrary spatial and temporal profiles after passing through a pulsed-laser amplifier with an arbitrary gain distribution have been studied in detail. Moreover, numerical calculations have been performed and compared for two cases: (1) the losses can be substituted approximately by a total loss factor T, and (2) the medium is divided into a series of thin slabs with certain gain distributions and loss factors Ti(T=ⅡiTi). As a result,the condition of the total-loss-factor approximation has been given.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1996年第12期1061-1066,共6页
Chinese Journal of Lasers
基金
国家高技术惯性约束聚变No.416-2.3.4资助
关键词
脉冲激光放大器
增益分布
高功率激光
pulsed-laser amplifier, spatial and temporal profiles, gain distribution, totalloss-factor approximation
