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

Anatoliy Andrushchak | Zendy; B. G. Mytsyk | Zendy; H. P. Laba | Zendy; O. V. Yurkevych | Zendy; I. Solskii | Zendy; A.V. Kityk | Zendy; B. Sahraoui | Zendy

Open Access

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

Author(s) -

Anatoliy Andrushchak,

B. G. Mytsyk,

H. P. Laba,

O. V. Yurkevych,

I. Solskii,

A.V. Kityk,

B. Sahraoui

Publication year - 2009

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.3238507

Subject(s) - lithium niobate , materials science , piezoelectricity , diffraction , doping , tensor (intrinsic definition) , photoelasticity , lithium (medication) , optics , ultrasonic sensor , stiffness , composite material , optoelectronics , acoustics , geometry , mathematics , physics , endocrinology , medicine , solid mechanics

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

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