DISPERSION OF REFRACTIVE INDICES AND BIREFRINGENCE OF CDSXSE1-X SINGLE CRYSTALS

The spectral dependence of the refractive indices and birefringence of CdSxSe1−x (including CdS and CdSe) single crystals has been investigated from the fundamental absorption edge up to the lattice vibration spectrum in the temperature interval 100 to 600 °K. In the region of v > 5000 cm−1 the measurements are carried out by the method of prism (with an absolute error for n of 5 × 10−4), for v < 5000 cm−1 by the modified interference method (with an absolute error for n of 5 × 10−3, and for Δn = ne − no of (2 to 4) × 10−5). The results are discussed. Copyright © 1969 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim