Publications [#139804] of Stephanos Venakides
Papers Submitted
- W.R. Lefew, S. Venakides, D.J. Gauthier, Accurate description of optical precursors and their relation to
weak-field coherent optical transients,
Phys. Rev. Lett.
(2007)
(last updated on 2007/12/17)Abstract:
We study theoretically the propagation of a step-modulated optical field as it passes through a dispersive dielectric using two different approximate methods: an asymptotic approach and a method that assumes a slowly-varying field envelope. By improving the accuracy of the asymptotic approach soitis valid over a wider range ofparameters, we show thatthe two methods makeidentical predictions. Wedemonstratethatprecursors canpersistfor many nanoseconds and the chirp inthe instantaneous frequency of the precurors can manifest in beats in the transmitted intensity. Our work strongly suggests that precursors have been observed in many previous experiments.