I. Aubrecht et al., SPACE-CHARGE FIELDS IN PHOTOREFRACTIVE MATERIALS ENHANCED BY MOVING FRINGES - COMPARISON OF ELECTRON-HOLE TRANSPORT MODELS, Journal of the Optical Society of America. B, Optical physics, 12(10), 1995, pp. 1918-1923
Space-charge fields in photorefractive materials enhanced by moving fr
inges are studied for simultaneous electron-hole transport. Two distin
ct models, one with a single set of impurity sites and the other with
two independent sets, are discussed. It is shown that the latter model
gives rise to a new space-charge field resonance that depends on the
relative concentration of electrons and holes. The space-charge wave c
oncept is used in the mathematical analysis of both models. (C) 1995 O
ptical Society of America