Acoustic Wave Propagation in TeO2 Single Crystal

Ohmachi, Yoshiro; Uchida, Naoya; Niizeki, Nobukazu

doi:10.1121/1.1912826

Cited by 82 publications

(17 citation statements)

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“…Thus, these directions are nothing but acoustic axes for the longitudinal and transverse waves. As far as we know, such a phenomenon has been observed only in paratellurite crystals [10]. The matter is that the velocities of the longitudinal AWs are usually much higher than those of the transverse waves.…”

Section: Resultsmentioning

confidence: 95%

Acoustic and elastic anisotropies of acoustooptic AgGaGeS4 crystals

Martynyuk-Lototska¹,

Parasyuk²,

Vlokh³

2016

Ukr. J. Phys. Opt.

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Abstract. We have experimentally studied the acoustic and elastic anisotropies of AgGaGeS 4 crystals. Basing on the acoustic wave velocities measured, we have determined the complete matrices of elastic stiffnesses and compliances. We have found that the orthorhombic unit cell of AgGaGeS 4 is only slightly distorted with respect to the prototypical tetragonal lattice. We have revealed a quite rare effect in AgGaGeS 4 crystals, an equality of the velocities of quasi-transverse and quasilongitudinal waves. When propagating along the direction of a so-called longitudinal-transverse 'acoustic axis', these waves become 'half-transverse' and 'half-longitudinal'. It has been found that the quasi-transverse acoustic wave that propagates in the crystallographic plane ac with the velocity 1570 m/s is the slowest wave in AgGaGeS 4 . The acoustooptic figure of merit for our crystals calculated following from the velocity of the slowest acoustic wave and rough estimation of the elastooptic coefficient can reach 500 . This suggests that AgGaGeS 4 can be a promising material for acoustooptic applications in the mid-IR spectral range.

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Section: Resultsmentioning

confidence: 95%

Acoustic and elastic anisotropies of acoustooptic AgGaGeS4 crystals

Martynyuk-Lototska¹,

Parasyuk²,

Vlokh³

2016

Ukr. J. Phys. Opt.

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“…The angle between the directions of the energy flow and the wave normal (i.e., the quantitative parameter of the obliquity) may be calculated using the relation [27] …”

Section: Resultsmentioning

confidence: 99%

Acoustooptic and acoustic properties of KLiB4O7 crystals

Mys¹

2009

Ukr. J. Phys. Opt.

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The acoustic and acoustooptic (AO) properties of KLiB 4 O 7 crystals are experimentally studied and analysed. It is shown that the above crystals can be used as a material for AO applications. The AO figure of merit calculated for the slowest acoustic wave is equal to M 2 =(332±120)×10 -15 s 3 /kg. Propagation of the acoustic energy flow in KLiB 4 O 7 for the cases of transverse and longitudinal acoustic waves is considered. It is shown that the obliquity for the slowest transverse wave is relatively small and so it cannot affect essentially the efficiency of AO interaction.

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“…One can calculate the angle between the directions of the energy flow and the wave normal (i.e., the obliquity angle) basing on the relation [10,11] …”

Section: Resultsmentioning

confidence: 99%

“…Let us remind in this respect that the acoustic obliquity effects for the energy flow are higher than their optical analogues. For example, the acoustic obliquity angle for TeO 2 crystals reaches 35° [10].…”

Section: Introductionmentioning

confidence: 99%