Estimation of Velocities and Energy Densities of GHz Domain Shear Fluxes Propagating in Sapphire by Brillouin Scattering Technique

抄録

Energy densities and velocities of GHz domain shear fluxes in sapphire were estimated using the Brillouin scattering theory. The Brillouin scattering cross section was calculated from sapphire's material parameters. The experiment was done using CdS domain shear fluxes. Direct contact was used to mirror surfaces of the CdS and the sapphire. Injection efficiency of shear fluxes ranging from 0.2 GHz to 1.1 GHz into the sapphire from CdS was measured by this method. In addition, energy density distributions of domain fluxes in the sapphire were estimated from scattering light intensities by employing the scattering cross section of the sapphire.