The reflector is an optical element that reflects the incident light by coating a metal silver or aluminum film or dielectric film on the back of the optical glass by vacuum coating. The use of a high reflectance mirror can double the output power of the laser ,and is reflected by the first reflective surface, the reflected image is not distorted, and there is no ghosting.

Oxygen-free copper materials are usually used in high-power laser systems due to their high thermal conductivity.

Diameter	Thickness	Material	Wavelength	Reflectivity
25mm	3mm	Oxygen-free copper	10.6um	≥99%
38mm	6mm	Oxygen-free copper	10.6um	≥99%
50mm	10mm	Oxygen-free copper	10.6um	≥99%
50mm	25mm	Oxygen-free copper	10.6um	≥99%
50.8mm	5.1mm	Oxygen-free copper	10.6um	≥99%
50.8mm	9.5mm	Oxygen-free copper	10.6um	≥99%
60mm	10mm	Oxygen-free copper	10.6um	≥99%
70mm	25mm	Oxygen-free copper	10.6um	≥99%
76.2mm	6.4mm	Oxygen-free copper	10.6um	≥99%