Abstract

We have determined experimentally the acoustic wave velocities for Pb2P2Se6 crystals and obtained complete matrices of the elastic stiffness and elastic compliance coefficients on this basis. The anisotropy of the acoustic wave velocities has been analyzed, and the spatial directions of propagation and polarization of the slowest acoustic waves have been determined. In the case of acousto-optic (AO) interaction with these waves, the AO figure of merit can reach extremely high values, thus making Pb2P2Se6 a promising AO material for the infrared spectral range.

© 2014 Optical Society of America

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