Role of charge saturation in photorefractive dynamics of micron-sized beams and departure from soliton behavior.
Experimental and theoretical results indicate that miniaturized micron-sized nonlinear beam phenomenology in photorefractives leads to a regime qualitatively distinct from solitonlike propagation on consequence of the specific role of space-charge saturation. In the highly modulated conditions typical of beams, this contribution amounts to an effective electron self-action.
Laboratorio di Ottica e Fotonica, Dipartimento di Ingegneria Elettrica, Università dell'Aquila, Monteluco di Roio 67040 L'Aquila, Italy. edelre@ing.univaq.it
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