A nonlinear optical phenomenon, namely, the surface waves in photorefractive crystals with a diffusion nonlinearity (of the gradient type), is suggested and analyzed. These waves can …
HC Pedersen, PM Johansen - JOSA B, 1995 - opg.optica.org
We present an analysis of what is called parametric oscillation in photorefractive media. It is shown theoretically that when a running grating and a constant electric field are applied to a …
A finite-difference technique was used to model photorefractive grating formations in sillenite crystals under nonstationary recording conditions of applied ac electric fields. These …
The transverse instability of counterpropagating waves in photorefractive media that is due to the formation of reflection gratings is studied. We obtain new solutions for the instability …
L Hao, Q Wang, C Hou - Journal of Modern Optics, 2014 - Taylor & Francis
Unlike previous cases discussed, non-linear changes of refractive index in the photorefractive (PR) materials are governed by both the linear and quadratic electro-optic …