Abstract

Experimental observation of one-dimensional (ID) and two-dimensional (2D) bright and dark spatial soliton propagation has been reported in photorefractive media.¹'⁴ The experiments were performed under externally applied dc field, which clearly sets some particular direction in the plane perpendicular to the axis of soliton propagation. A theoretical study of the induced nonlinear refractive index by a light beam in a photorefractive media with a photogalvanic nonlinearity or an externally applied electric was presented by Zozulya et al.⁵ In their paper anisotropy in the response of the medium was predicted for a 2D light beam.

© 1996 Optical Society of America