Optical and Mechanical Property Changes in Thin-Film Filters with Post Deposition Thermal Treatments

Abstract

The generalised spheroidal wave equations for a hydrogenic system in half space are solved exactly. The eigenvalues of the lowest twenty-two physical states are obtained and presented in tabular form and/or in the form of curves. The results are analysed and also discussed along with the non-crossing rule of von Neumann and Wigner.

High refractive index TiO2 film deposited by electron beam evaporation

“…This is limited by currently available materials especially in the visible range. 4,5 In multilayer complex optical filters, 6,7 the increased n of TiO 2 will reduce the layers to facilitate fabrication, and moreover the compact microstructure of high refractive index rutile film will meet the environment stability requirement for precision optical coating applications. In coatings for stable use at the high temperature up to 1000uC, the phase change can increase the optical loss in film, accompanied by the change in density and crack in the film.…”