| Nonoxide glasses, i.e. chalcogenide and halide glasses, have been
used in infrared optics as lens, prism and window materials due to
their high transparency in infrared wavelength region. Recently,
nonoxide glasses have been developed as infrared optical fibre materials.
Optical properties of oxide glasses, such as silicate, borate and
phosphate glasses, have been studied sufficiently, but relatively few
research works deal with nonoxide glasses because of difficult preparation
of these glasses. In this paper, a brief review of refracth·edispersion
properties of chalcogenide and fluoride glasses is presented. |
