G. Brost et al., GAIN SPECTRA OF BEAM COUPLING IN PHOTOREFRACTIVE SEMICONDUCTORS, Journal of the Optical Society of America. B, Optical physics, 15(7), 1998, pp. 2083-2091
The photorefractive recording dynamics of two-beam coupling in semi-in
sulating semiconductors by beams with slightly different frequencies a
re studied theoretically and experimentally. The influences of bulk ab
sorption, Gaussian beam profiles, and experimental geometry on the tem
poral response are analyzed. These effects act to narrow the bandwidth
. Measurement of the material photorefractive time constant is discuss
ed. (C) 1998 Optical Society of America.