D. Wolfersberger et al., NUMERICAL EVOLUTION OF THE TIME DEPENDENCY OF BOTH THE SPACE-CHARGE FIELD AND THE SELF-FOCUSING PROCESS IN PHOTOREFRACTIVE MEDIA, Journal of the Korean Physical Society, 32, 1998, pp. 436-438
A numerical study of the time behavior of a beam propagating in a phot
orefractive medium on two different time scales is presented. For time
s larger than the dielectric relaxation time, we simulate the time dep
endent non-linear wave propagation equation. For times shorter, we sim
ulate a time dependent partial differential equation describing the sp
ace-charge field evolution.