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Analysis of Acousto-Optic Figure of Merit in KGW and KYW Crystals.

ABSTRACT: Monoclinic potassium rare-earth crystals are known as efficient materials for solid-state lasers and acousto-optic modulators. A number of specific configurations for acousto-optic devices based on those crystals have recently been proposed, but the acousto-optic effect of those crystals has only been analyzed fragmentarily for some interaction directions. In this work, we numerically searched for the global maxima of an acousto-optic figure of merit for isotropic diffraction in KGd(WO₄)₂ and KY(WO₄)₂ crystals. It was demonstrated that the global maxima of the acousto-optic figure of merit in those crystals occur in the slow optical mode propagating along the crystal's twofold symmetry axis and in the acoustic wave propagating orthogonally, both for quasi-longitudinal and quasi-shear acoustic modes. The proposed calculation method can be readily used for the optimization of the acousto-optic interaction geometry in crystals with arbitrary symmetry.

SUBMITTER: Yushkov KB

PROVIDER: S-EPMC9697735 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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Analysis of Acousto-Optic Figure of Merit in KGW and KYW Crystals.

Yushkov Konstantin B KB Naumenko Natalya F NF Molchanov Vladimir Ya VY

Materials (Basel, Switzerland) 20221117 22

Monoclinic potassium rare-earth crystals are known as efficient materials for solid-state lasers and acousto-optic modulators. A number of specific configurations for acousto-optic devices based on those crystals have recently been proposed, but the acousto-optic effect of those crystals has only been analyzed fragmentarily for some interaction directions. In this work, we numerically searched for the global maxima of an acousto-optic figure of merit for isotropic diffraction in KGd(WO<sub>4</su ...[more]

PMID: 36431668

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