Physical fundamentals of designing mirrors for optical resonators of polychromatic lasers

Abstract

A physical model of resonator mirrors for polychromatic lasers is considered, with corresponding graphical and mathematical justification of the process of their design. Optimal interference structures are synthesised taking into account the nonlinear nature of the spectral dependence of the absorption coefficient. Examples of visible range Ar⁺-laser mirrors obtained as a result of the design are given. The results of testing the developed interference coatings are presented. The output power of low-power Ar⁺ lasers increases by up to 50%, and that of high-power lasers by up to 20%.