Carbon Dioxide (CO₂) Lasers offer the highest power continuous wave (CW) lasers that are currently available. They produce a beam of infrared light with the principle wavelength bands centering on 9.4 and 10.6 micrometers. The most basic form of a CO₂ laser consists of a gas discharge with a total reflector at one end and an output coupler at the output end. Lasers of this type can be constructed to have CW powers between milliwatts and kilowatts.