Theoretical optimization of nonlinear chirped-pulse fiber amplifiers
Theoretical optimization of nonlinear chirped-pulse fiber amplifiers
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DOI：
10.1364/josab.24.001815
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发表时间：
2007-08
影响因子：
1.9
通讯作者：
A. Chong;L. Kuznetsova;F. Wise
中科院分区：
文献类型：
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作者：
A. Chong;L. Kuznetsova;F. Wise
非线性相移(Φ-NL)在啁啾脉冲光纤放大器中的应用是最近被证明的。在存在大量ΦNL的情况下，系统地优化飞秒脉冲光纤放大器的性能是一个具有挑战性的多变量问题。我们引入了一个近似的理论模型，只要ΦNL不是很大，光谱就会发生实质性的变化。该模型允许任意啁啾脉冲放大系统用一组四条通用曲线来描述。这些结果揭示了性能的标度，并允许确定给定脉冲持续时间和能量时剩余群速度色散和三阶色散的最佳值。
The exploitation of nonlinear phase shifts (ΦNL) in chirped-pulse fiber amplifiers has been demonstrated recently. Systematic optimization of the performance of a femtosecond-pulse fiber amplifier in the presence of substantial ΦNL is a challenging multivariable problem. We introduce an approximate theoretical model that is valid as long as the ΦNL is not so large that the spectrum changes substantially. The model allows an arbitrary chirped-pulse amplification system to be described by a set of four universal curves. These reveal the scaling of performance and allow determination of the optimal values of residual group-velocity dispersion and third-order dispersion for a given pulse duration and energy.