Abstract

We report the experimental observation of steady-state photorefractive Y junctions and sequences of high-order dark photorefractive screening solitons in a biased bulk strontium barium niobate crystal. The parameters that characterize the properties of the high-order dark screening solitons are measured and compared with the theoretical prediction for the fundamental dark screening soliton. The high-order dark solitons induce stable waveguides in one transverse dimension that can guide other, possibly very intense, beams of different wavelengths.

© 1996 Optical Society of America

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