The influence of cross-phase modulation on third-harmonic generation is
theoretically studied. Generalized phase-matching conditions for third-harmonic
generation including pump-intensity-dependent phase shifts related to self- and
cross-phase modulation effects are discussed. The phase mismatch between the
pump and third-harmonic pulses is shown to vary from the leading edge of the
pump pulse to its trailing edge, resulting in an asymmetric spectral broadening
of the third harmonic.
© Optical Society of America
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