Light-induced properties of doped Bi4Ge3O12 single crystals

Vera Marinova; Shiuan-Huei Lin; Marin Gospodinov; Ken Yuh Hsu

doi:10.1117/12.507712

21 October 2003 Light-induced properties of doped Bi₄Ge₃O₁₂ single crystals

Vera Marinova, Shiuan-Huei Lin, Marin Gospodinov, Ken Yuh Hsu

Proceedings Volume 5206, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX; (2003) https://doi.org/10.1117/12.507712
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

Citation Download Citation

Vera Marinova, Shiuan-Huei Lin, Marin Gospodinov, and Ken Yuh Hsu "Light-induced properties of doped Bi₄Ge₃O₁₂ single crystals", Proc. SPIE 5206, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX, (21 October 2003); https://doi.org/10.1117/12.507712

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