MULTIDIELEKTRISCHER SPIEGEL, INSBESONDERE FUER DAS MITTELINFRAROT, INSBESONDERE FUER EINEN KOHLENDIOXYDLASER.

摘要

A multidielectric mirror, in particular for the mid infrared, in which the last optical layer of a multidielectric stack is constituted by a composite layer including a thin protective surface layer of a material of amorphous structure together with a high index and very low absorption dielectric layer, with the thicknesses of these two layers being designed to obtain maximum reflectance given the indices of these materials. The protective layer is preferably made of amorphous hydrogenated silicon. The invention is applicable, in particular, to making carbon dioxide power lasers.