The NuPULSE™ picosecond fiber laser from Nufern has a continuously tunable pulse duration from 750 ps to 100 ns and repetition rates from 20 kHz up to 5 MHz. The short pulse duration and high repetition rates combine to give high speed, permanent black marking on a variety of metals. The single mode beam quality and picosecond pulses open up a variety of high-precision marking and cold-processing micromachining applications such as Li-Ion battery foil cutting. The NuPULSE provides all these features in a compact and easy to integrate package with a 1.5 meter umbilical and integrated isolator and beam expander. The laser is completely controlled via an industry standard digital interface with optional DB25 or RS-232.