Perturbative analysis of photorefractive fundamental space-charge field with phase modulation at large modulation depths

摘要

Abstract: We discussed the kinetics of the photorefractive fundamental space-charge field with phase-modulation at large modulation depth of the interference pattern. When no external field is applied, the influence of large modulation on the corrected modulation function must be considered at low phase- modulation frequency and at small diffusion field. For the drifted case, the corrected modulation function will increase with increase of the external applied field. !9