Journal ArticleDOI
Acoustooptical method of measuring sound velocity in solids
TLDR
In this paper, a method of measuring the sound velocity in acoustooptic dynamic active solids has been investigated based on the fact that the velocity can be determined from the frequency difference between two resonant standing-wave modes in an acoustical interferometer.Abstract:
A method of measuring the sound velocity in acoustooptic d y active solids has been investigated. The method is based upon the fact that the velocity can be determined from the frequency difference between two resonant standing-wave modes in an acoustical interferometer. Instead of measuring the transformed acoustical impedance of the interferometer, the energy in the modes is probed with a laser beam, resulting in easy and accurate measurements. The method is applied to measure the sound velocity in germanium, which is the most utilized material in acoustooptical modulators for CO2-lasers. The velocity of a longitudinal acoustical wave propagation in the [11l]-direction in single crystal germanium was found to be 5481±6 m/s at room temperature.read more
Citations
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Journal ArticleDOI
A new Bragg reflection detection instrument for ultrasonic measurement based on self-mixing effects for laser diode
Atsushi Yarai,Takuji Nakanishi +1 more
TL;DR: In this article, a Bragg reflection detection instrument for an ultrasonic measurement that is based on self-mixing effects due to an optical feedback for a laser diode is proposed, which allows measurement of the velocity and/or absorption of ultrasound in an ultrahigh frequency (UHF) range, in spite of its extremely simple configuration.
Proceedings ArticleDOI
Solution-concentration sensor using ultrasonic light diffraction effect
TL;DR: In this paper, the authors describe the workings of an innovative solution-concentration sensor using an acousto-optic effect on a range of ultrasonic frequencies (9-30 MHz) on which Raman-Nath diffraction occurs.
Journal ArticleDOI
An Interferometric Acoustooptic Method for Measuring High-Frequency Acoustic Losses in Isotropic and Anisotropic Materials with High Q-Factor
D. Ivanov,J.I. Burov +1 more
TL;DR: In this article, an acoustic Fabry-Perot interferometer is used for measuring high-frequency acoustic losses in isotropic and anisotropic materials with high Q-factor.
Proceedings ArticleDOI
A new Bragg reflection detection instrument for ultrasonic measurement based on optical feedback effects for laser diode
Atsushi Yarai,T. Nakanishi +1 more
TL;DR: In this article, a Bragg reflection detection instrument for ultrasonic measurements that is based on optical feedback effects for a laser diode is proposed, which allows us to measure the velocity and/or absorption of ultrasonic waves in an ultrahigh frequency (UHF) range, in spite of its extremely simple configuration.
Journal ArticleDOI
Retrieval of sound-velocity profile in ocean by employing Brillouin scattering LiDAR.
TL;DR: In this article , a novel approach based on stimulated Brillouin scattering (SBS) LiDAR for retrieving the sound velocity profile was proposed, where sound velocity profiles in the upper-ocean mixed layer of South China Sea were retrieved theoretically and experimentally.
References
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Book
Introduction to solid state physics
TL;DR: In this paper, the Hartree-Fock Approximation of many-body techniques and the Electron Gas Polarons and Electron-phonon Interaction are discussed.
Journal ArticleDOI
Acoustooptic deflection materials and techniques
N. Uchida,N. Niizeki +1 more
TL;DR: In this paper, the physics and technology of acoustooptics are reviewed mainly from the standpoint of designing laser-beam deflection devices and their applications, and the importance of the fabrication techniques is stressed.
Journal ArticleDOI
Measurement of Third‐Order Moduli of Silicon and Germanium
H. J. McSkimin,P. Andreatch +1 more
TL;DR: In this article, Brugger et al. used ultrasonic wave propagation to determine the third-order moduli of a single crystal by means of ultrasonic frequency-wave propagation, and showed that the results for silicon and germanium demonstrate a good degree of self-consistency.