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Hybrid pulse propagation model and quasi-phase-matched four-wave mixing in multipass cells
Journal of the Optical Society of America B ( IF 1.9 ) Pub Date : 2020-09-15 , DOI: 10.1364/josab.395789 Marc Hanna , Nour Daher , Florent Guichard , Xavier Délen , Patrick Georges
Journal of the Optical Society of America B ( IF 1.9 ) Pub Date : 2020-09-15 , DOI: 10.1364/josab.395789 Marc Hanna , Nour Daher , Florent Guichard , Xavier Délen , Patrick Georges
We describe a nonlinear propagation model based on a generalized Schrödinger equation in the time domain coupled to Gaussian beam evolution through ABCD matrices that account for Kerr lensing in the spatial domain. This model is well suited to simulate propagation in mildly nonlinear systems such as multipass cells for temporal compression. It is validated against both a full $(x,y,z,t)$ numerical model and recently reported experimental results in multipass cells, with excellent agreement. It also allows us to identify the physical mechanism for the recently reported parasitic appearance of spectral content in the 700–950 nm range in argon-filled multipass cells that are used to compress pulses at 1030 nm. We think this is due to a quasi-phase-matched degenerate four-wave mixing process. This process could be used in the future to perform wavelength conversion as is already done in fibers and capillaries.
中文翻译:
多通道电池中的混合脉冲传播模型和准相位匹配四波混频
我们在时域上基于广义Schrödinger方程描述了一种非线性传播模型,它通过ABCD矩阵耦合了高斯光束演化,而ABCD矩阵在空间域中占了Kerr透镜。该模型非常适合于模拟轻度非线性系统(例如用于时间压缩的多通道像元)中的传播。同时针对完整的$(x,y,z,t)$进行验证数值模型和最近报道的多通道细胞实验结果,具有很好的一致性。它还使我们能够确定最近报道的在充满氩气的多通道样品池中用于压缩1030 nm脉冲的700-950 nm范围内光谱含量的寄生现象的物理机制。我们认为这是由于准相位匹配的简并四波混频过程造成的。像光纤和毛细管中已经进行的那样,将来可以使用此过程执行波长转换。
更新日期:2020-10-02
中文翻译:
多通道电池中的混合脉冲传播模型和准相位匹配四波混频
我们在时域上基于广义Schrödinger方程描述了一种非线性传播模型,它通过ABCD矩阵耦合了高斯光束演化,而ABCD矩阵在空间域中占了Kerr透镜。该模型非常适合于模拟轻度非线性系统(例如用于时间压缩的多通道像元)中的传播。同时针对完整的$(x,y,z,t)$进行验证数值模型和最近报道的多通道细胞实验结果,具有很好的一致性。它还使我们能够确定最近报道的在充满氩气的多通道样品池中用于压缩1030 nm脉冲的700-950 nm范围内光谱含量的寄生现象的物理机制。我们认为这是由于准相位匹配的简并四波混频过程造成的。像光纤和毛细管中已经进行的那样,将来可以使用此过程执行波长转换。