Authors Referees APS Members |
January 2008, to be published in Physical Review A
Gain-assisted superluminal optical solitons at very low light intensity
We show the possibility of generating gain-assisted superluminal optical solitons in a room-temperature three-state active Raman gain medium. We demonstrate both analytically and numerically that under appropriate conditions a signal field of very low intensity can evolve into a stable shape-preserving wave form that propagates with superluminal velocity. Shape recovery of superluminal solitons after collision is also demonstrated numerically. © 2008 The American Physical Society.
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