Large-sized mirrors for power optics
V.Yu. Khomich a
V.A. Shmakov b
a Institute of Problems of Electrophysics of the Russian Academy of Sciences, Dvortsovaya nab. 18, St. Petersburg, 19118, Russian Federation
b Prokhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119942, Russian Federation
Researches into the fabrication of large-sized mirrors for power optics from such materials as invar, SiC, and a C—Si—SiC composite material are discussed. Methods to calculate thermal deformations in cooled mirrors under irradiation with light have been developed. A technique to reduce the mirror weight is suggested that is based on using materials consisting of multilayered cellular structures and porous materials.