Complete sets of elastic constants and photoelastic coefficients of pure and MgO-doped lithium niobate crystals at room temperature

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TitreComplete sets of elastic constants and photoelastic coefficients of pure and MgO-doped lithium niobate crystals at room temperature
Type de publicationArticle de revue
AuteurAndrushchak, A.-S., Mytsyk, B.-G., Laba, H.-P., Yurkevych, O.-V., Solskii, I.-M., Kityk, A.-V., Sahraoui, Bouchta
EditeurAmerican Institute of Physics
TypeArticle scientifique dans une revue à comité de lecture
Année2009
LangueAnglais
Date2009/10
Numéro7
Pagination073510 - 073510-6
Volume106
Titre de la revueJournal of Applied Physics
ISSN0021-8979
Mots-clésacousto-optical effects, doping profiles, elastic constants, laser beam effects, lithium compounds, magnesium compounds, photoelasticity, piezo-optical effects, piezoelectricity
Résumé en anglais

This paper presents the results of ultrasonic measurements of LiNbO3 and LiNbO3:MgO crystals. The tensors of piezoelectric coefficients, elastic stiffness constants, and elastic compliances are determined for both crystals at room temperature. Combining these data with the results of piezo-optical measurements, a complete set of photoelastic tensor coefficients is also calculated. Doping of LiNbO3 crystals by MgO does not lead to a considerable modification of their elastic and photoelastic properties. However, LiNbO3:MgO is characterized by a considerably higher resistance with respect to powerful light radiation, making it promising for future application in acousto-optic devices that deal with superpowerful laser radiation. Presented here are the complete tensor sets of elastic constants and photoelastic coefficients of LiNbO3 and LiNbO3:MgO crystals that may be used for a geometry optimization of acousto-optical interaction providing the best diffraction efficiency of acousto-optical cells made of these materials.

URL de la noticehttp://okina.univ-angers.fr/publications/ua1926
DOI10.1063/1.3238507
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http://dx.doi.org/10.1063/1.3238507