We report on measurements of the refractive indices and the absorption in bulk single crystals of aluminum nitride, in the region from 1 to 8 THz. Both indices exhibit normal dispersion with no pronounced absorption resonances. Average refractive indices are 2.9 and 3.1, optical power loss coefficients are approximately 2 cm-1 and 4 cm-1, and the estimated static dielectric constants are 7.84 and 9.22, for the ordinary and extraordinary polarization, respectively.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 28893223Light scattering can reveal various dynamical processes in matter at widely different time scales. Basically we distinguish three spectroscopic techniques that cover slow entropy fluctations, acoustic phonon excitations and Raman scattering on optical phonons.
B.04 Guest lecture
COBISS.SI-ID: 2901348