The YLS-3000-U is a Ytterbium fiber laser that provides up to 3 kW of output power, operating in CW/modulated modes up to 5 kHz with wall-plug efficiencies of more than 40%. The dynamic range is from 10% to full power with no change in beam divergence or beam profile, allowing a single laser to be used for both high and low-power applications such as welding, drilling and cutting. The high brightness allows the use of long focal length processing lenses for vastly improved depth of field and minimal damage to optical components. The units can be supplied with fiber lengths up to 100 meters, different fiber diameters and variety of multi-port beam switches, beam couplers, termination optics and scanners.