PicoTrain picosecond oscillators

High Q Laser has introduced its new PicoTrain high-power picosecond oscillators with wavelengths in UV, green and IR and output powers of up to 50W with high stability and reliability.

The most basic oscillator in the range is the PicoTrain IC-10000, delivering pulse trains of 7.5ps length and 10W output power at a wavelength of 1064nm. Starting with this basic oscillator, the lasers can be extended or field-upgraded with four different external modules, constituting the complete PicoTrain platform.

For example, the company states that the power of the PicoTrain can be increased up to 50W at 1064nm by applying the power amplifier module. Similarly, the pulse picker module enables the 50W ps-laser to deliver pulses with an energy of up to 10µJ, controllable by an external TTL signal enabling single pulses or pulse bursts up to a maximum repetition rate of 80MHz. For variations in wavelength, the green module offers visible picoseconds laser radiation with 20W power at 532nm, and the harmonics module offers an additional wavelength in the UV at 355nm with an output power of up to 10W. The power distribution of all wavelengths is controlled continuously by an internal remote controlled motorised variable beam splitter.

The PicoTrain platform is based on High Q Laser's industry-compatible housings and features a very compact design and small footprint. The housing is machined from a single block of aluminium and forms a heavy monolithic case with low vibration coupling. The laser resonator comprises industrial mirror mounts, which are optimised by finite element methods and show no degrees of freedom. A recirculation cooling circuit through the massive ground plate stabilises the the housing thermally. The lasers are manufactured in clean room environment and are sealed off, resulting in exceptional spatial and temporal stability of the output beam.

High Q Laser utilises the user-replaceable diode module technology (URDM) for direct diode pumping. The diodes operate at a 'de-rated' nominal pump current in order to maximise MTBF.