Tube Laser Cutting Systems 2018
The CO2 resonator requires much more energy and is larger. Electricity is used to combine gases to create the laser beam. Mirrors aid in the light's intensity and prepare it for exiting the resonator. The beam must travel along a path that includes several cooled mirrors to reach the lens after it has exited the resonator. This causes the beam to lose power and quality.
A laser cutter that cuts sheet metal can transform a sheet of paper in seconds. You can also do the same with a laser tube cutter machine but it is a completely different story about how it is done.