REFRACTIVE-INDEXES OF ALSB AND GASB-LATTICE-MATCHED ALXGA1-XASYSB1-Y IN THE TRANSPARENT WAVELENGTH REGION

The refractive indices of AlSb grown by the solute diffusion method and GaSb-lattice-matched Al(x)Ga(1-x)AS(y)Sb1-y alloy grown by liquid-phase epitaxy have been determined at room temperature from accurate measurements of the reflectance of p-polarized light as a function of the angle of incidence. The refractive index variations versus the photon energy were obtained in the spectral range 0.5-1.5 eV. Experimental data in the transparent wavelength region could be matched by calculated curves on the basis of a single-oscillator model.