Refractive index analysis of graded index coatings prepared by glancing angle deposition

Abstract

Glancing angle deposition is a novel method for the preparation of coatings, it can be used to prepare graded index coatings. In this paper, the packing factor of the coatings prepared by glancing angle deposition is analyzed under the conditions that the flux arrival angle of coating material is α and the columnar microstructure inclination angle of coatings is β. And then the relation between the refractive index of the coatings, the flux arrival angle and the columnar inclination angle is discussed based on Drude theory.