Theory of heterodyne pump–probe experiments with femtosecond pulses
Theory of heterodyne pump–probe experiments with femtosecond pulses
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飞秒脉冲外差泵浦探针实验理论
DOI：
10.1364/josab.13.002437
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发表时间：
1996
影响因子：
1.9
通讯作者：
J. Mørk
中科院分区：
文献类型：
--
作者：
A. Mecozzi;J. Mørk
我们给出了外差实验的第一个分析，其中包括传播沿着波导。在假设材料的偏振被消除的条件下，我们推导出简单的解析表达式的相干耦合项，精确的高斯脉冲和其他形状的一个很好的近似。我们发现测量的信号在接近零泵探测延迟的情况下不显示任何相位依赖性。在外差信号中识别出四波混频带，并通过类比空间情况提出了一类新的实验。
We give the first analysis of heterodyne experiments that includes the propagation along the waveguide. Under the assumption that the material polarization is adiabatically eliminated we derive simple analytic expressions for the coherent coupling term, exact for Gaussian pulses and a good approximation for other shapes. We find that the measured signal does not display any phase dependence close to zero pump–probe delay. A four-wave mixing band is identified in the heterodyne signal, and a new class of experiments is proposed by analogy with the spatial case.