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Investigating nonlinear femtosecond pulse propagation with frequency-resolved optical gating

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4 Author(s)
H. K. Eaton ; Joint Inst. for Lab. Astrophys., Colorado Univ., Boulder, CO, USA ; T. S. Clement ; A. A. Zozulya ; S. A. Diddams

Frequency-resolved optical gating (FROG) is used to investigate nonlinear pulse propagation in normally dispersive media. We present high-dynamic-range measurements of broad-bandwidth femtosecond pulses that result from nonlinear propagation in fused silica and compare these measurements with a (3+1)-dimensional modified nonlinear Schrodinger equation. We also demonstrate the ability of FROG to provide information about a noninstantaneous nonlinearity in methanol. In this case, the instantaneous nonlinear index and the time response of the noninstantaneous nonlinearity are used as fit parameters in a (1+1)-dimensional model

Published in:

IEEE Journal of Quantum Electronics  (Volume:35 ,  Issue: 4 )