Yoshiaki TOKUNAGA

Graduate School of Electrical Engineering and Electronics, Kanazawa Institute of Technology, 7-1, Nonoichi, Ogigaoka, Ishikawa-ken, 921 Japan

(Received September 20, 1996; Accepted December 12, 1996)

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.

Key words : Brillouin scattering, CdS, sapphire, GHz domain shear fluxes, direct contact, Brillouin scattering cross section, He-Ne laser