Abstract

We demonstrate the possible use of the Wigner–Ville transformation for describing ultrashort light pulses in both time and frequency and give support to the intuitive pictures used by experimentalists in the field. Two cases are considered: the effect of linear dispersion and self phase modulation. Various characteristics can be extracted from the Wigner–Ville distribution, e.g., time broadening, power spectrum broadening and reshaping, instantaneous frequency time variation.

© 1992 Optical Society of America

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