Evolution of photorefractive gratings in sillenite crystals in conditions of induced extrinsic photoconductivity

A. I. Grachev; Alexei A. Kamshilin; Pavel M. Karavaev; Victor V. Prokofiev

doi:10.1117/12.418868

15 March 2001 Evolution of photorefractive gratings in sillenite crystals in conditions of induced extrinsic photoconductivity

A. I. Grachev, Alexei A. Kamshilin, Pavel M. Karavaev, Victor V. Prokofiev

Author Affiliations +

Proceedings Volume 4358, Optics of Crystals; (2001) https://doi.org/10.1117/12.418868
Event: Optics of Crystals, 2000, Mozyr, Belarus

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.

Citation Download Citation

A. I. Grachev, Alexei A. Kamshilin, Pavel M. Karavaev, and Victor V. Prokofiev "Evolution of photorefractive gratings in sillenite crystals in conditions of induced extrinsic photoconductivity", Proc. SPIE 4358, Optics of Crystals, (15 March 2001); https://doi.org/10.1117/12.418868

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