Piezo-optic and elasto-optic effects in lead molibdate crystals

被引：15

作者：

Mytsyk, B. ^{[1
]}

Erba, A. ^{[2
]}

Demyanyshyn, N. ^{[1
]}

Sakharuk, O. ^{[1
]}

机构：

[1] NAS Ukraine, Karpenko Phys Mech Inst, 5 Naukova St, UA-79060 Lvov, Ukraine

[2] Univ Turin, Dipartimento Chim, Via Giuria 5, I-10125 Turin, Italy

来源：

OPTICAL MATERIALS | 2016年 / 62卷

关键词：

Piezo-optic coefficients; Elasto-optic coefficients; Indicative surfaces; Acousto-optic quality; Lead molibdate (PbMoO4); AB-INITIO; SPATIAL ANISOTROPY; DEVICE; COEFFICIENTS; MOLYBDATE; SURFACES; FIGURE; MERIT;

D O I：

10.1016/j.optmat.2016.11.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Piezo-optical and elasto-optical properties of lead molibdate (PbMoO4) crystals are investigated, as determined by the quantum-mechanical ab initio calculation of the full set of elasto-optic, piezo-optic and elastic tensor components. Indicative surfaces are built, which describe the anisotropy of these stress- and strain-optical effects and allow for its rigorous analysis. Maximum values of these properties are determined as well as the geometries of acousto-optic interaction displaying the maximum efficiency. Lead molibdate crystals are found to be characterized by a large piezo-optic efficiency, the maximum change of the optical path (per unit of mechanical stress and specimen length) being calculated to 24.9 Br, which is a much larger value than previously reported for other well-known piezo-optic materials such as LiNbO3, CaWO4 and GaP. It is also shown that a significant rotation (up to several tens of degrees) of the optical indicatrix about the X-3 optical axis is induced by uniaxial pressure or deformation, depending only on pressure (or deformation) direction, which has relevant implications in the design of acousto-optic cells. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：632 / 638

页数：7

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