Acousto-Optical Spectroscopy of Dislocations in Wide Band Gap Semiconductors

摘要

Fundamental problems of interaction of dislocations with photo-sensitive point defects are discussed using a lot of photo-acoustic, acousto-optic, photo-optic and acousto-electric effects recently found in the wide band gap Hgl2 semiconductor. Acousto-optical spectra obtained for both amplitude independent and amplitude dependent damping ranges are presented. Available data for the amplitude dependent damping in semiconductors are reviewed.