title: Fixed index gratings in LiNbO(3):Fe upon long-term exposure to an intense laser beam.
abstract: Permanently fixed noisily recorded refractive index gratings are discovered in single crystals of LiNbO(3):Fe upon long-term exposure to a single laser beam with high intensities of I=100 kW/m(2) and ambient temperature. The fixing process is explained by considering the effect of laser-induced heating of the sample and the well-known simultaneous thermal fixing procedure.
authors: Department of Physics, University of Osnabrück, Barbarastrasse 7, 49069 Osnabrück, Germany. vdieckma@uos.de
authors: Volker
authors: V
authors: Dieckmann
authors: Andreas
authors: A
authors: Selinger
authors: Mirco
authors: M
authors: Imlau
authors: Mikhail
authors: M
authors: Goulkov