Abstract
Using semiconductor Maxwell-Bloch equations, we analyze the response of an ensemble of excitons driven by a femtosecond optical pulse beyond the traditional approach of slowly varying amplitudes and phases. For optical pulses of a given duration, we show that the off-resonance optical field can evolve into a stable soliton. Besides hyperbolic-secant solitons, we find a single soliton with nonzero asymptotics that is stable against low-amplitude perturbations and whose form is not affected by collisions.
- Received 26 November 1996
DOI:https://doi.org/10.1103/PhysRevA.56.1569
©1997 American Physical Society