摘要
在三维放大自发辐射 (ASE)的模拟计算中 ,计入了侧壁反射效应以及KrF自发辐射的谱线形状 (高斯型、洛伦兹型及平顶型 )的影响 ,并对空间网点的影响进行了考察。经过综合分析 ,给出了ASE对预放大器放大特性影响的上、下限范围。当计入平顶型频谱分布 ,壁反射系数为 0 .2时 ,与不计入ASE的情形对比 ,天光一号预放大器的提取效率下降为 35 %。
In the numerical simulation of 3 D amplified spontaneous emission(ASE), we have investigated the effects of side reflection of ASE and the spectrum line shapes (Gaussian, Lorentzion and Square hat forms) of KrF spontaneous emission, including the influence of space grids in calculation. The ranges that ASE can affect the amplification quality of the Heaven 1 pre amplifier are gotten. We have found that the ASE effects of square hat pulse can be twice of that of Lorentzion pulse, and the extraction efficiency will be decreased about 40%. From our calculation, we learn that the efficiency can decline to about 35% if we include the influence of ASE with square hat pulse and reflection coefficient of 0.2, in contrasting with the situation which not considering the ASE effects.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2002年第5期651-654,共4页
High Power Laser and Particle Beams
基金
国家 8 63 80 4主题资助项目
