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Self-organization of scattering in photorefractive KNbO3 into a reconfigurable hexagonal spot array

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Abstract

The scattering cone (~2°) from an Ar laser beam (514 nm) in photorefractive KNbO3:Fe has been observed to transform into a reconfigurable hexagonal spot array. This phenomenon can be explained through the creation of laser-induced transmission and reflection grating arrays.

© 1995 Optical Society of America

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