Design and Processing of Oxygen-free Copper Mirror for High-energy Laser

Abstract

Oxygen-free copper mirror is important in high-energy laser optical components,while playing a beam expander and refracting the optical path. The oxygen-free copper mirror hasn’t cooling system for fine crystal lattice within the material and without the phenomenon of oxygen. The material is high-purity electrolysis copper by medium-pressure forging, with more delicate lattice,without agglomeration, forming the oxygen-free copper mirror substrate. The internal stress is eliminated by stabilization treatment. It can meet the drawing requirement from mechanical processing. The oxygen-free copper mirror surface is detected using microscope. If there is no abnormal phenomenon, then turn into nickel plating. The grinding and polishing accord to the working procedure, and detected by the laser interferometer, so as to meet the technical requirements and achieve the targets of the oxygen-free copper mirror.