FOURIER TRANSFORM TECHNIQUE WITH FREQUENCY FILTERING FOR OPTICAL THIN-FILM DESIGN

摘要

A Fourier analysis of existing and potentially complex refractive index profiles is often useful in the resolution of thin-film design problems. Applications of a frequency-filtering technique, which consists of the suppression of undesired spatial frequencies from the refractive index profiles, are described. A new, extremely simple antireflection coating synthesis method based on this concept is proposed. [References: 16]