THEORETICAL-MODEL FOR THE TEMPORAL DYNAMICS IN PHOTOREFRACTIVE 2-WAVEMIXING

We present our theoretical investigations into the formalism of the tr ansient effects during photorefractive two-wave mixing. An analytical model has been developed based on Kukhtarev's band-transport equations and on the linearization approximation. The physical phenomena involv ed dl;ring transients have been predicted for both drift and diffusion mechanisms. Good agreement is found when our model is compared with p revious works, especially with the experimental measurements performed with BSO crystals by Heaton and Solymar.