Abstract

Phase-dependent interactions of two photovoltaic bright spatial solitons in photorefractive $\mathrm{Fe}:\mathrm{Li}\mathrm{Nb}{\mathrm{O}}_3$ have been studied experimentally. We have observed that in-phase solitons attract each other and fuse together for a small enough crossing angle, whereas out-of-phase solitons repel each other. These results are similar to interactions of bright screening spatial solitons found in saturable photorefractive media such as strontium barium niobate.

© 2006 Optical Society of America

Formation of photovoltaic bright spatial soliton in photorefractive LiNbO3 crystal by a defocused laser beam induced by a background laser beam

Wei-Long She, Chi-Cheng Xu, Bin Guo, and Wing-Kee Lee
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Dark and bright photovoltaic spatial solitons in photorefractive crystals with positive refractive-index perturbation

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Polarization and configuration dependence of beam self-focusing in photorefractive LiNbO₃

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