Photorefractive properties of (1-10) and (111)-cut sillenite crystals when external electric field is applied along the direction of the optimum diffraction efficiency

Nikolaos C Deliolanis ,A G Apostolidis ,E D Vanidhis ,D G Papazoglou

doi:10.1007/s00340-002-0933-5

Photorefractive properties of (1-10) and (111)-cut sillenite crystals when external electric field is applied along the direction of the optimum diffraction efficiency

Nikolaos C Deliolanis , A G Apostolidis + Show 2 more

https://doi.org/10.1007/s00340-002-0933-5

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Journal: Applied Physics B	Publication Date: Jul 1, 2002
Citations: 8

Affiliation: Aristotle University of Thessaloniki, FORTH Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas

#Optimum Diffraction Efficiency #External Electric Field + Show 8 more

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Abstract

We study the influence of the application of an external electric field on the grating formed in (1-10) and (111)-cut photorefractive sillenite crystals. Optimum conditions for application of the bias field are examined, taking into account the shift of the grating orientation for maximum diffraction efficiency along the crystal depth. The contribution of the piezoelectric effect is considered both in the electro-optic tensor and space charge field calculations. An analysis on the diffractive properties under these optimum conditions shows an increase of 30% in maximum diffraction efficiency in Bi12GeO20, and experimental verification for this is provided.

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