Abstract

Films of BiF3 with thicknesses up to 2.35 μm have been deposited on KCl. Similar optical properties have been obtained in films prepared by thermal evaporation and reactive sputtering in a Freon atmosphere. A very broad transmission range from 2600 Å to 20 μm has been measured on BiF3 films ~1 μm thick. Far ir and Auger spectra are presented. BiF3 appears promising as a new optical thin film coating for applications not involving high powers at 10.6 μm and longer wavelengths.

© 1979 Optical Society of America

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