Range
The CO2 resonator is much larger and requires more energy, as electricity is introduced to a combination of gases to produce the laser beam. Mirrors help the light gain in intensity, preparing it to exit the resonator. After exiting the resonator, the beam must travel through a path comprising several cooled mirrors until it reaches the lens. This travel causes a loss of power and quality in the laser beam.
The fiber laser does not require as much maintenance. The fiber laser doesn't need to be cleaned as often as a CO2 laser cutter machine. The fiber laser does not require any preventive maintenance as long as it has access to clean chiller water and that the filters are regularly replaced.