Breakdown of the slowly varying envelope approximation in the self-focusing of ultrashort pulses
- 1 April 1998
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 23 (7) , 534-536
- https://doi.org/10.1364/ol.23.000534
Abstract
We show theoretically and experimentally that with ultrashort pulses much longer than a single optical cycle, the effects of self-steepening and space–time focusing are important for describing the nonlinear dynamics of self-focusing. Asymmetric temporal splitting of the pulse envelope is observed in which the relative magnitudes of the peaks are reversed as the input power is increased.Keywords
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