OPTICAL DISPERSION-RELATIONS FOR ALSB FROM E = O TO 6.0 EV

A complete set of the model dielectric functions, ε(ω), for calculation of the optical dispersion relations of semiconductors are presented. The model is based on the Kramers-Kronig transformation and includes the E 0, E0+Δ0, E1, E 1+Δ1, E'0 (E' 0+Δ'0), E2, E' 1, and Eidg(indirect-band-gap) transitions as the main dispersion mechanisms. Detailed analyses are presented for AlSb, and results are in satisfactory agreement with the experimental data over the entire range of photon energies (0-6.0 eV). Dielectric-related optical data of AlSb, such as the refractive index, the extinction coefficient, and the absorption coefficient, are also presented as an example of the ability of our model.