The Hypertherm Fiber Laser system is a laser cutting system with up to 1/2" steel cutting capability...that uses a fiber optic cable as the beam delivery system. This typr of beam delifery allows for use of this laser cutting system on robots and conventional types of cnc cutting machines. It uses a solid state laser power supply, which eliminates long term resonator maintenance costs, ands comes with an integrated cutting head height control system.
These systems do require a full safety enclosure, and are priced very competitively with industrial C02 metal cutting lasers. Pricing is likely outside of the realm of entry level cnc machine applications...as it is in the $200k range.
Here is a link to the Hypertherm site with more details. Fiber Laser Cutting Equipment | Hypertherm