The propagation of ultrashort laser pulse in optical medium brings on lots of nonlinear optical phenomenons, such as the generation of plasma channels, conical emission of white light, spectral broadening and pulse self-compression.
超短脉冲激光在在光学介质中传输时,会产生丰富的非线性光学现象:如等离子体通道形成、锥状辐射、频谱展宽、脉冲自压缩等。
参考来源 - 基于光斑分割的光场空间调制及其强场诱导光丝光谱效应·2,447,543篇论文数据，部分数据来源于NoteExpress
结果表明：自相位调制不影响混沌信号脉冲的形状，但能产生非线性相移使混沌信号频谱展宽；
Self-phase modulation of fiber does not affect the pulse shape of chaotic signal, however, its product of nonlinear phase shift can widen the chaotic signal spectrum.
随着孔隙率、孔径的减小，多孔铝的共振吸声系数有所下降，吸声频谱曲线向低频方向移动，且频带宽度展宽。
When the porosity and pore diameter reduced, the sound absorption curve moved to the low frequency zone and the frequency bandwidth increased at the same time.
当锐度参量增加时，强度自相关曲线宽度变窄，自相关频谱曲线随之展宽。
When the edge sharpness parameter increases, the curve of intensity autocorrelation becomes narrow, and the autocorrelation spectra.
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