Observation of Acousto-Optic Diffraction of Terahertz Radiation in Liquefied Sulfur Hexafluoride at Room Temperature

Diffraction of terahertz radiation on ultrasound in liquefied sulfur hexafluoride at room temperature was observed for the first time. The dependences of the diffraction efficiency on the sound frequency, angle of incidence, and amplitude of radio-frequency electrical signal applied to a piezo-trans...

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Bibliographic Details
Published in:IEEE transactions on terahertz science and technology 2020-01, Vol.10 (1), p.44-50
Main Authors: Nikitin, Pavel A., Knyazev, Boris A., Voloshinov, Vitaly B., Scheglov, Michael A.
Format: Article
Language:English
Subjects:
Acoustic beams
Acoustic frequencies
Acousto-optics
Attenuation
Bars
Diffraction
Diffraction efficiency
Incidence angle
liquefied gas
Piezoelectric transducers
Radio signals
Room temperature
Sound diffraction
Sulfur
Sulfur hexafluoride
Temperature dependence
terahertz (THz) radiation
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Summary:Diffraction of terahertz radiation on ultrasound in liquefied sulfur hexafluoride at room temperature was observed for the first time. The dependences of the diffraction efficiency on the sound frequency, angle of incidence, and amplitude of radio-frequency electrical signal applied to a piezo-transducer were studied. Deflection of diffracted radiation by an angle of 10°was observed. It was found that the diffraction efficiency at room temperature is significantly (four times) higher than the one at 14°C known from the literature. The obtained and published data on the acousto-optic diffraction in liquefied sulfur hexafluoride contradict the well-known theory.
ISSN:2156-342X
2156-3446
DOI:10.1109/TTHZ.2019.2948821