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Proceedings Paper

Evolution of photorefractive gratings in sillenite crystals in conditions of induced extrinsic photoconductivity
Author(s): A. I. Grachev; Alexei A. Kamshilin; Pavel M. Karavaev; Victor V. Prokofiev
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Paper Abstract

The experimental investigation of the diffusion mechanism of photorefractive recording in BSO and BTO crystals at 633 nm under the conditions of sample pre-illumination by incoherent yellow-green light has been carried out. The nonmonotonic time behavior of diffraction efficiency manifesting itself as a local minimum has been found. Nothing of the kind is observed without preliminary illumination. The obtained results support the model in which the nonmonotonic evolution of a recorded grating is associated with the conditions of non-steady state and nonlinear photoconductivity in preexposed samples.

Paper Details

Date Published: 15 March 2001
PDF: 7 pages
Proc. SPIE 4358, Optics of Crystals, (15 March 2001); doi: 10.1117/12.418868
Show Author Affiliations
A. I. Grachev, A.F. Ioffe Physical-Technical Institute (Russia)
Alexei A. Kamshilin, Univ. of Joensuu (Finland)
Pavel M. Karavaev, A.F. Ioffe Physical-Technical Institute (Russia)
Victor V. Prokofiev, Univ. of Joensuu (Finland)

Published in SPIE Proceedings Vol. 4358:
Optics of Crystals
Vasiliy V. Shepelevich; N. N. Egorov, Editor(s)

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