Frequency-resolved optical gating is used to characterize the propagation of intense femtosecond pulses in a nonlinear, dispersive medium. The combined effects of diffraction, normal dispersion, and cubic nonlinearity lead to pulse splitting. The role of the phase of the input pulse is studied. The results are compared with the predictions of a three-dimensional nonlinear Schrödinger equation.
© 1998 Optical Society of America
Scott A. Diddams, Hilary K. Eaton, Alex A. Zozulya, and Tracy S. Clement, "Amplitude and phase measurements of femtosecond pulse splitting in nonlinear dispersive media," Opt. Lett. 23, 379-381 (1998)