Abstract
The pulse broadening by group velocity dispersion can be balanced by the narrowing effect of self-phase modulation to form temporal solitons.1 The identical nonlinear Schrödinger equation describes the one-transverse-dimension balancing of diffraction and Kerr-medium nonlinear refraction. Some evidence for spatial solitons has been published for planar waveguides of CS2 and glass, both in Kerr (n2) media.2,3 Here we report soliton formation in a semiconductor gain medium which is amplifying rather than lossy, is accumulative rather than instantaneous, and is near resonance instead of far from resonance.
© 1992 Optical Society of America
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