Optical and durability properties of infrared transmitting thin films

Abstract

Refractive indices and extinction coefficients have been calculated for 14 oxide and fluoride thin films over a wavelength range of 0.6-12 mum. Results from adhesion, abrasion, and humidity testing have been included to characterize the durability of each film. The data allow selection of the best oxide and fluoride materials for IR antireflection coatings, and detailed optical constants are provided for the coating design.