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利用现有窄带激光传输模拟软件SG99和宽带激光传输模拟软件CPAP,以及自编的一维光脉冲传输放大的逆算程序,评估了原型装置在主放基本结构不动的情况下激光脉冲由窄带改为宽带,实现数十nm宽带条件数kJ的输出能力。宽带下增益窄化效应显现,对光谱增益窄化补偿也进行了研究。结果表明,为了补偿增益窄化效应,在3J主放注入能量下通过对光谱整形可满足系统2000~3000J的输出,但损失约40%的注入能量。考虑到这一因素,预放级至少要有5J的输出能力。研究结果指导了数十nm宽带倍频激光驱动实验系统研制实施方案。
Using the existing narrow-band laser transmission simulation software SG99 and broadband laser transmission simulation software CPAP, as well as the self-compiled one-dimensional optical pulse transmission amplification of the inverse calculation program, the prototype device in the main release of the basic structure of the case of laser pulse from narrow band to change For broadband, to achieve tens of nm broadband conditions kJ output capacity. Wideband gain narrowing effect appears, the spectral gain narrowing compensation has also been studied. The results show that in order to compensate for the narrowing effect of gain, the output of 2000 ~ 3000J can be satisfied by spectral shaping at 3J main injection energy, but the injection energy of about 40% is lost. Taking into account this factor, the pre-release level of at least 5J output capacity. The research results guide the development of dozens of nm wideband frequency doubled laser drive experimental system.