Thermal stress minimization in optical components coated with Ge-As-Se films

摘要

Abstract: Shear moduli for (As$-2$/Se$-3$/)$-1$MIN@y$/ Ge$-y$/(0$LSEQ@y$LSEQ@0.3$/), (As$-2$/Se$-3$/)$- 1$MIN@y$/(Ge$-2$/Se$-3$/)$-y$/ (0$LSEQ@y$LSEQ@v1) glasses have been calculated by the linear combination of atomic orbitals method. Linear thermal expansion coefficients for As$-2$/Se$-3$, (As$-2$/Se$-3$/)$-0.9$/Ge$-0.1$/, (As$- 2$/Se$-3$/)$-0.7$/Ge$-0.3$/ and Ge$-33$/As$-12$/Se$-55$/ films have been derived from thermal stress measurements. Correlation between theoretical and experimental thermal stress values for amorphous films has been made. The availability of the total stress minimization in multilayer structures based on the films under consideration has been shown. !12