Surface acoustic wave parametric generation with pumping of light

The parametric interaction between the surface-acoustic wave (SAW) and semiconductor carriers performed by the pumping of light has been studied theoretically and experimentally. As a result, it was shown that, in the separated media-coupled semiconductor/piezoelectric structure, the coupling between the SAW and semiconductor carrier can be varied using the irradiation of light from the outside. It was also confirmed that, using the pumping of light, the SAW parametric generation can readily be excited. Furthermore, we have studied the applications of these phenomena to engineering, and have shown that by utilizing the SAW parametric generation the Fourier transform of the light beam pattern can be obtained.