​ Abstract: The anisotropy of acoustic wave characteristics in gallium arsenide crystals was studied in the frequency range from 30 to 1200 MHz at room temperature. The measured values of the acoustic wave velocity and attenuation coefficient along the principal cubic directions [100], [110], and [111] were used to determine the real and imaginary components of the elasticity tensor. These data enabled construction of anisotropy surfaces for velocity and attenuation in the (001) and (110) crystallographic planes. Additionally, deviations in polarization and energy flux vectors from the wave vector direction were quantified, including the angle of internal conical refraction for degenerate transverse waves. Compared with earlier preliminary results, this study provides a comprehensive and extended analysis of the anisotropy of acoustic wave characteristics in GaAs crystals, which will be useful in the development of acousto-optic and ultrasonic devices.

Keywords: Anisotropy, Velocity and attenuation of acoustic waves, Gallium arsenide crystals, Energy flux vector, Polarization, Real and imaginary elastic constants.

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