Influence of the purity of the starting materials on the recording of dynamic holograms in Bi12TiO20 crystals

Autor:	V. V. Prokof’ev, Yu. B. Afanas’ev, E. V. Mokrushina, A. A. Nechitailov
Rok vydání:	1997
Předmět:	Materials science Physics and Astronomy (miscellaneous) Absorption spectroscopy business.industry Doping Analytical chemistry Oxide chemistry.chemical_element Bismuth Crystal chemistry.chemical_compound Chromium symbols.namesake Optics chemistry Electric field symbols business Debye length
Zdroj:	Technical Physics Letters. 23:181-183
ISSN:	1090-6533 1063-7850
DOI:	10.1134/1.1261640
Popis:	The parameters of Bi12TiO20 crystals grown with bismuth oxide of different degrees of purity were measured by a holographic recording technique in an external ac electric field and were compared with a crystal specially doped with chromium. Various crystal parameters such as the diffusion length of the photoexcited carriers and the Debye screening length were determined. It was found that the absorption spectrum of the material and the holographic recording efficiency were strongly influenced by light chromium doping and by insufficient purity of the starting mixture.
Databáze:	OpenAIRE
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