Graded index rugate filters: power-sine rugate structures

摘要

Quarterwave stacks and quasi-sinusoidal rugate structures are unified by the introduction of the power-sine rugate structures. Changing one parameter modifies the optical admittance profile continuously from quarterwave stack to rugate structure. The fact that power sine rugates have adjustable high order harmonics can be used for the design of non-polarizing coatings.