Examination of the temperature influence on phase matching frequency in tunable acousto-optic filters

Манцевич, С. Н.; Kostyleva, Ekaterina I.

doi:10.1016/j.ultras.2018.07.016

Cited by 31 publications

(7 citation statements)

References 24 publications

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“…Recent experiments by Manstevich and Kostyleva revealed anomalous (i.e. non-exponential) attenuation of this wave [73].…”

Section: Diffraction Tensor and Other Measures Of Anisotropymentioning

confidence: 88%

Extreme acoustic anisotropy in crystals visualized by diffraction tensor

Науменко¹,

Yushkov²,

Molchanov³

2019

Preprint

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Acoustic wave propagation in single crystals, metamaterials and composite structures is a basic mechanism in acoustic, acousto-electronic and acousto-optic devices. Acoustic anisotropy of crystals provides a variety of device performances and application fields, but its role in pre-estimation of achievable device characteristics and location of crystal orientations with desired properties is often underestimated. A geometrical image of acoustic anisotropy can be an important tool in design of devices based on wave propagation in single crystals or combinations of anisotropic materials. We propose a fast and robust method for survey and visualization of acoustic anisotropy based on calculation of the eigenvalues of bulk acoustic wave (BAW) diffraction tensor (curvature of the slowness surface). The stereographic projection of these eigenvalues clearly reveals singular directions of BAW propagation (acoustic axes) in anisotropic media and areas of fast or slow variation of wave velocities. The method is illustrated by application to three crystals of different symmetry used in different types of acoustic devices: paratellurite, lithium niobate, and potassium gadolinium tungstate. The specific features of acoustic anisotropy are discussed for each crystal in terms of their potential application in devices. In addition, we demonstrate that visualization of acoustic anisotropy of lithium niobate helps to find orientations supporting propagation of high-velocity surface acoustic waves.

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“…Recent experiments by Manstevich and Kostyleva revealed anomalous (i.e. non-exponential) attenuation of this wave [73].…”

Section: Diffraction Tensor and Other Measures Of Anisotropymentioning

confidence: 88%

Extreme acoustic anisotropy in crystals visualized by diffraction tensor

Науменко¹,

Yushkov²,

Molchanov³

2019

Preprint

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“…In the course of an experimental study of AO interaction in tellurium glasses, measurements were made to estimate the attenuation coefficient of longitudinal α L and shear α S ultrasonic waves. The measurements were performed using the AO method, the essence of which is to measure the intensity of diffracted light depending on the distance to the ultrasound exciter [16][17][18]. A buffer was used as an ultrasound exciter, the parameters of which were described above in the Section 2.…”

Section: Measurement Of Attenuation Of Longitudinal and Shear Acousti...mentioning

confidence: 99%

Acoustic and acousto-optic properties of Ge-=SUB=-a-=/SUB=-Se-=SUB=-b-=/SUB=-Te-=SUB=-c-=/SUB=- and Si-=SUB=-a-=/SUB=-Se-=SUB=-b-=/SUB=-Te-=SUB=-c-=/SUB=- glasses in case diffraction on longitudinal and shear acoustic waves

V.S.

2022

Optics and Spectroscopy

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We investigated acoustic and acousto-optic properties of glasses based on germanium, selenium, silicon and tellurium. The results of measurement are presented for two group of glasses including germanium, selenium and tellurium (GeSeTe) and silicon and tellurium (SiTe). The major characteristics of glasses such as the velocity of longitudinal and shear acoustic waves as well as the values of figure of merit are presented. The values of figure of merit are obtained by diffraction on longitudinal and shear acoustic waves at the wavelength of optical radiation λ = 3.39 μm. We also present the results of measurements of acoustic attenuation values α for longitudinal and shear acoustic waves in tellurium glasses at ultrasound frequencies in the range f = 75-100 MHz. Keywords: acousto-optics, acousto-optic figure of merit, germanium, selenium, silicon, tellurium, attenuation acoustic waves.

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“…В ходе экспериментального исследования АО взаимодействия в теллуровых стеклах были проведены измерения с целью оценки коэффициента затухания продольной α L и сдвиговой α S ультразвуковых волн. Измерения проводились АО методом, суть которого заключается в измерении интенсивности дифрагированного света в зависимости от расстояния до возбудителя ультразвука [16][17][18]. В качестве возбудителя ультразвука использовался буфер, параметры которого были описаны выше в разд.…”

Section: измерение затухания продольных и сдвиговых акустических волн в теллуровых стеклахunclassified

“…Из теории известно, что зависимость интенсивности дифрагированного излучения от расстояния может быть аппроксимирована законом Бугера [16][17][18]:…”

Section: измерение затухания продольных и сдвиговых акустических волн в теллуровых стеклахunclassified

Акустические и акустооптические свойства стекол Ge-=SUB=-a-=/SUB=-Se-=SUB=-b-=/SUB=-Te-=SUB=-c-=/SUB=- и Si-=SUB=-a-=/SUB=-Se-=SUB=-b-=/SUB=-Te-=SUB=-c-=/SUB=- в случае дифракции на продольных и сдвиговых акустических волнах

Khorkin¹

2021

Оптика И Спектроскопия

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We investigated acoustic and acousto-optic properties of glasses based on germanium, selenium, silicon and tellurium. The results of measurement are presented for two group of glasses including germanium, selenium and tellurium (GeSeTe) and silicon and tellurium (SiTe). The major characteristics of glasses such as the velocity of longitudinal and shear acoustic waves as well as the values of figure of merit are presented. The values of figure of merit are obtained by diffraction on longitudinal and shear acoustic waves at the wavelength of optical radiation λ = 3.39 µm. We also present the results of measurements of acoustic attenuation values α for longitudinal and shear acoustic waves in tellurium glasses at ultrasound frequencies in the range f = 75-100 MHz.

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Examination of the temperature influence on phase matching frequency in tunable acousto-optic filters

Cited by 31 publications

References 24 publications

Extreme acoustic anisotropy in crystals visualized by diffraction tensor

Extreme acoustic anisotropy in crystals visualized by diffraction tensor

Acoustic and acousto-optic properties of Ge-=SUB=-a-=/SUB=-Se-=SUB=-b-=/SUB=-Te-=SUB=-c-=/SUB=- and Si-=SUB=-a-=/SUB=-Se-=SUB=-b-=/SUB=-Te-=SUB=-c-=/SUB=- glasses in case diffraction on longitudinal and shear acoustic waves

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