ISSN:
1432-0649
Keywords:
42.65 Ma
;
42.70 Gi
;
72.40+W
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Beam coupling effects in an optically active photorefractive crystal of Bi12SiO20 are very much influenced by the polarization direction of the interacting beams. Analytic expressions for the signal amplification in the diffusion regime have been derived for two commonly used crystallographic configurations,G∥〈001〉 andG∥〈110〉,G being the grating vector. It is shown that only the 〈001〉 orientation is suitable for signal amplification. The results obtained for the diffusion regime can be applied, as a first approximation, to the more common and more intricate drift regime in which a bias electric field is applied to the crystal to enhance the coupling effect.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00692494
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