Optical properties of Pd/Sb (Mn) thin films

Optical Properties of Pd/Sb(Mn) thin films on P-GaAs, grown by the solid-phase regrowth method, have been investigated. The reflectance and transmittance spectra of the thin films, which have different thicknesses, atomic ratios and annealing temperatures, and studied. The results show that when the films have a thickness around 50 nm, atomic ratio of Pd:Sb approximated to 1:1, and annealing temperature between 300 °C and 350 °C for 15 second, a high reflectance and a relatively high transmittance are reached. This kind of thin films could be used as the P-type mirror and electrode of Vertical-Cavity Surface-Emitting Semiconductor Lasers.