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Conference Paper
Photorefractive Effects, Materials, and Devices
La Colle sur Loup France
June 17, 2003
ISBN: 1-55752-755-5
Material Characterization: Inorganic (MCI)

Controlling the Diffraction Efficiency in Electrical Fixing Technique

Galen Duree, Azad Siahmakoun, A. Thompson, and N. Nazhestkina

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An electrical fixing technique is used to permanently store holograms in a SBN:60 crystal. We have optimized the duration of the light illumination and applied electric field during the writing process. We have observed that the DE could be controlled by a write-reveal grating technique, where high-voltage pulses of opposite polarity are applied to the crystal. By varying the amplitude of electric field we obtained DE from 0 to 70%. The range of chosen applied electric fields depends on the coercive field of the crystal. An increase in the illumination time can also lead to a smaller DE, however, we have found that DE can be dramatically increased by exposing the crystal to several light pulses after the revealing phase. By varying the intensity and the duration of the exposure it is possible to control the DE of the grating.

© 2003 Optical Society of America

OCIS Codes
(160.2260) Materials : Ferroelectrics
(190.5330) Nonlinear optics : Photorefractive optics

G. Duree, A. Siahmakoun, A. Thompson, and N. Nazhestkina, "Controlling the Diffraction Efficiency in Electrical Fixing Technique," in Photorefractive Effects, Materials, and Devices, P. Delaye, C. Denz, L. Mager, and G. Montemezzani, eds., Vol. 87 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 117.

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