Interaction of laser radiation with a system of optically induced domains

This report present an investigation of the interaction between optical radiation and photoinduced electrons in photorefractive crystals, It was established that the laser beam incident with the domain structure of piezoferroelectric crystal can be generated not only second optical harmonics but also an acoustic waves at the first and second harmonics, The acoustic generation due to the optically exitation and the following redistribution of the free electrons in domains.