Electric-field multiplexing of volume holograms in paraelectric crystals

被引：7
|
作者：
Balberg, M [1 ]
Razvag, M
Refaeli, E
Agranat, AJ
机构：
[1] Hebrew Univ Jerusalem, Interdisciplinary Ctr Neural Computat, IL-91904 Jerusalem, Israel
[2] Hebrew Univ Jerusalem, Dept Appl Phys, IL-91904 Jerusalem, Israel
来源：
APPLIED OPTICS | 1998年 / 37卷 / 05期
关键词：
D O I：
10.1364/AO.37.000841
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Electric-field multiplexing (EFM) results from the tuning of the effective wavelength of the light beam inside a photorefractive crystal. This tuning results from the application of an external electric field to the crystal during holographic recording. We demonstrate the high Bragg selectivity of this multiplexing technique in paraelectric crystals and compare it with the selectivity obtained in the ferroelectric phase. The effects of the two major physical parameters of working in the paraelectric phase, the temperature and the external electric field applied during the writing stage, are investigated. Experimental results of the EFM of three image-bearing holograms recorded in reflection geometry are presented along with a qualitative analysis of the Bragg selectivity in paraelectric crystals. (C) 1998 Optical Society of America.
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页码：841 / 847
页数：7
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