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Theoretical study of optical parametric chirped pulse amplification pumped by divergent beams
Author(s): 
Pages: 4635-4641
Year: Issue:  8
Journal: ACTA PHYSICA SINICA

Keyword:  光参量啁啾脉冲放大增益带宽发散角高斯光束;
Abstract: 对发散光束抽运的光参量啁啾脉冲放大器的增益带宽进行了系统的理论研究.采用空间傅里叶变换和四阶Runge-Kutta算法,分别模拟了非衍射极限情况下的高斯光束和空间频谱为矩形的发散光束作为抽运光时的增益曲线.结果表明:不管是在可见光或是在近红外光谱区,用发散光束均可以明显地改善光参量啁啾脉冲放大系统的增益带宽.选取合适的发散角和抽运光强,可以获得高增益、宽谱带的信号光输出.
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