Acoustic and Elastic Anisotropies of Acoustooptic Tl3PSe4 Crystals
We report on ultrasonic and elastic properties of acoustooptic (AO) Tl3PSe4 crystals. Acoustic wave (AW) velocities for different geometries are obtained experimentally, and complete matrices of elastic stiffness and compliance coefficients are computed. Anisotropy of AW propagation is analyzed. The minimal AW velocities are as follows: (i) 1902 m/s for the quasilongitudinal wave propagating at the angle 52 deg with respect to a axis in ab plane, (ii) 983 m/s for the quasitransverse wave QT1 propagating in cb plane along the bisector of b and c axes, and (iii) 526 m/s for the quasitransverse wave QT2 propagating along a (or b) axis. The geometries of AO interactions with the slowest acoustic eigenwaves are analyzed. Finally, AO figures of merit M 2 are roughly estimated for the cases of interactions with the slowest AWs. Within isotropic approximation for the elastooptic tensor they are equal to ∼ 1950 · 10–15 s3/kg and ∼ 2800 · 10–15 s3/kg at the isotropic interactions with the slowest quasilongitudinal wave and the slowest AW QT1, respectively. The M 2 parameter as high as ∼ 18800 · 10–15 s3/kg can be expected for the case of anisotropic AO interaction with the slowest AW QT2.
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Document Type: Research Article
Publication date: November 1, 2018
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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