redPOWER High Power Air-Cooled Lasers: 25-200W The redPOWER range of air-cooled continuous-wave / modulated (CW-M) fiber lasers from SPI comprises of a power range of 25 to 200W. The air-cooled range is ideal for a use in a wide range of standard factory or processing laboratory conditions, and can be powered from a standard single-phase wall socket. redPOWER air-cooled lasers are ideal for applications including: precision thin metal cutting down to sub 100µm; welding applications including spot and seam welding, fine wire balling, brazing and soldering of metals and plastics; thermal and sintered marking and atom trapping.