Dark build-up of holograms in BaTiO3 after recording |
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| Authors: | K. Buse J. Frejlich G. Kuper E. Krätzig |
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| Affiliation: | (1) Fachbereich Physik, Universität Osnabrück, Barbarastrasse 7, D-49069 Osnabrück, Germany;(2) Instituto de Física, Laboratório de Óptica, Universidade Estadual de Campinas, 13081 Campinas, SP, Brazil |
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| Abstract: | Holograms recorded under suitable conditions in photorefractive BaTiO3 exhibit an unusual dark build-up. The diffraction efficiency increases by some orders of magnitude after the recording beams are switched off, and then steadily decreases afterwards. An interpretation of this effect in terms of a two-center charge transport model is given. |
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| Keywords: | 78.20 61.70 72.40 |
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