TITLE

Photorefractivity of Hafnium-doped congruent lithium–niobate crystals

AUTHOR(S)
Razzari, Luca; Minzioni, Paolo; Cristiani, Ilaria; Degiorgio, Vittorio; Kokanyan, Edvard P.
PUB. DATE
March 2005
SOURCE
Applied Physics Letters;3/28/2005, Vol. 86 Issue 13, p131914
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Transient and steady-state measurements of photoinduced birefringence in Hf-doped congruent lithium–niobate crystals are presented. Through a systematic investigation of crystals with different dopant concentrations, we find that Hf doping induces a progressive decrease of photorefraction up to a threshold concentration of about 4 mol %. Such a decrease is correlated to a corresponding increase in photoconductivity. The interpretation of measurements has to take into account heating effects that may be attributed to nonlinear absorption processes.
ACCESSION #
16702307

 

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