Optical Properties of Solids

absorption coefficient absorption edge alloys amorphous anisotropy approximation atomic band structure Brillouin zone calculated CARDONA Chem components conduction band corresponding critical points crystal cubic curve cyclotron cyclotron resonance density dependence dielectric constant direct dispersion DRESSELHAUS effective mass EHRENREICH electric field electromagnetic electron electroreflectance emission energy bands energy gap equation excited exciton experimental F center Fermi surface film frequency germanium hole impurity incidence indirect transitions infrared InSb interaction interband transitions lattice line shape linear m₁ magnetic field matrix element measurements metals modes modulation observed obtained optical constants optical properties oscillations parameters peak perturbation phonon photon energy Phys plane plasma polarization potential Proc reflectance region saddle point scattering selection rules semiconductors shown in fig solid spectra spectrum spin-orbit splitting symmetry temperature term theory valence band vibrations wave functions wave vector zero zincblende