Abstract
Measured data are presented on glass transition temperature, thermal expansion coefficient, and refractive index for glasses in the Ge–As–Se system. The range of reciprocal dispersive power between 8 μm and 12 μm of 110–159 for these glasses is discussed in relation to their basic physical properties, and it is shown that useful compositions for bulk synthesis can be identified. A brief account is given of the preparation techniques, which enable glass to be made with an oxide content of the order of 1 ppm wt as measured by gamma photon activation analysis. The influence of oxide impurity on the transmission is shown for the three glasses Ge20–Se80, As40–Se60, and Ge30–As15–Se55.
© 1977 Optical Society of America
Full Article | PDF ArticleMore Like This
M. V. Sukhanov, A. P. Velmuzhov, T. V. Kotereva, I. V. Skripachev, and M. F. Churbanov
Opt. Mater. Express 9(8) 3204-3214 (2019)
I. P. Kaminow and H. M. Presby
Appl. Opt. 16(1) 108-112 (1977)
A. J. Glass and A. H. Guenther
Appl. Opt. 16(5) 1214-1231 (1977)