NONLINEAR-OPTICS PHENOMENA AND DEVICES: Self-deflection of the path of a light beam in a photorefractive crystal

Abstract

The problem of propagation of a light beam with speckle in a photorefractive crystal with diffusive photoresponse is solved analytically. While the angular spectrum of the beam remains Gaussian, the beam is deflected, with a rate of rotation proportional to the square of the divergence angle.