Showing papers by "J. J. Sánchez-Mondragón published in 1994"
TL;DR: In this article, the generation of sub-picosecond solitons in active model-ocked fiber lasers is investigated, both analytically and numerically, taking into account the pulse dispersive spreading, self-phase modulation, finite amplification bandwidth, pump depletion and Raman self-frequency shift.
Abstract: Generation of subpicosecond solitons in active modelocked fiber lasers is investigated, both analytically and numerically. The laser model takes into account the pulse dispersive spreading, self-phase modulation, finite amplification bandwidth, pump depletion and Raman self-frequency shift. Our analytical theory, which is based on the inverse scattering method perturbation approach, allows us to calculate the steady-state parameters of the soliton pulse. The analytic predictions are confirmed by numerical simulation. It is shown that the minimal pulse duration may be achieved provided that the Raman self-frequency shift is suppressed by the phase modulator. >
15 citations
TL;DR: In this paper, the collective interaction of N identical two-level atoms with a quantum electromagnetic field in a perfect cavity is considered, and it is shown that the initial atomic state coherence introduces some coherent features in the dynamics of the initially thermal field.
3 citations