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对飞秒脉冲放大中通过整形种子脉冲光谱补偿增益窄化效应的过程进行了数值模拟 ;对比研究了普通种子脉冲放大过程和整形种子脉冲放大过程中的光谱增益特性 ;定义了带宽窄化率 ;讨论了初始啁啾量对注入种子脉冲及增益窄化效应的影响 .计算结果表明 :借助整形种子光谱可理想地补偿啁啾脉冲放大中的光谱窄化效应
The process of compensating the gain narrowing by shaping seed pulse spectrum was simulated in the femtosecond pulse amplification. The spectral gain characteristics of common seed pulse amplification process and shaping seed pulse amplification were compared. The bandwidth narrowing rate was defined. The effects of the initial chirp volume on the implanted seed pulse and the gain narrowing effect are discussed.The calculated results show that the spectral narrowing effect in the chirped pulse amplification can be perfectly compensated by the shaping seed spectrum