Geometric parametric instability of femtosecond pulses in graded-index multimode fiber

We numerically and experimentally study the spatio-temporal femtosecond pulse evolution in graded-index multimode fiber at normal dispersion regime. We report the first demonstration of geometric parametric instability sidebands generation with ultrashort pulses in the literature.

Geometric parametric instability of femtosecond pulses in graded-index multimode fiber

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