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Proceedings Paper

Light-induced properties of doped Bi4Ge3O12 single crystals
Author(s): Vera Marinova; Shiuan-Huei Lin; Marin Gospodinov; Ken Yuh Hsu
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Paper Abstract

Optically homogeneous bismuth germanate Bi4Ge3O12 single crystals doped with vanadium, cobalt and vanadium plus cobalt have been successfully grown by Czohralski technique with automatically diameter-weight control. The distribution coefficients for individual doping elements are determined. The effect of doping on the light-induced properties of BGO single crystals is studied. Optical absorption spectrum of annealed samples can be strongly modified under ultraviolet illumination. The photochromic effect is optically or thermally reversible from one state to another. Volt-amper charactersitcs show linear behavour and dark conductivity values are s ~ 10-13 (Ω.cm)-1. Holographic grating were successfully recorded in all investigated doped crystals at 514 nm.

Paper Details

Date Published: 21 October 2003
PDF: 7 pages
Proc. SPIE 5206, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX, (21 October 2003); doi: 10.1117/12.507712
Show Author Affiliations
Vera Marinova, National Chiao Tung Univ. (Taiwan)
Shiuan-Huei Lin, National Chiao Tung Univ. (Taiwan)
Marin Gospodinov, Institute of Solid State Physics (Bulgaria)
Ken Yuh Hsu, National Chiao Tung Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5206:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX
Francis T. S. Yu; Ruyan Guo; Shizhuo Yin, Editor(s)

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