The new green (532 nm) laser LDH-P-FA-530XL generates > 200 mW average output power at 80 MHz repetition rate.

The picosecond pulsed laser diode heads of the LDH-FA Series are based on a Master Oscillator Fiber Amplifier (MOFA) concept with frequency conversion. The master oscillator generates infrared picosecond pulses at variable repetition rates up to 80 MHz (depending on model) using the proven gain-switching technique from PicoQuant. The output of this laser is directly connected to a fiber amplifier, which boosts the output from the seed laser by several dB. This output is then transformed to green emission (531 ± 3 nm) or yellow emission (596 ± 2 nm). The final pulse widths can be as short as 130 ps (FWHM) for the yellow laser head and even < 100 ps (FWHM) for the green laser heads.

Four laser heads of the LDH-FA Series are currently available: two low power versions that directly emit green or yellow laser light from a PM fiber with FC/APC fiber connector and two green emitting high-power versions with collimated output. The low power versions can generate more than 300 µW (yellow) or up to 2 mW (green) average output power at 40 MHz repetition rate. The high power versions reach even more than 200 mW average output power at 80 MHz repetition rate, which can be optionally coupled to single mode optical fibers with coupling efficiencies > 50 %.

All laser heads can be driven by the PDL 828 'Sepia II', the PDL 800-D or the PDL 800-B. The high power green lasers can even be driven by the PDL 808 'Sepia'.

Scheme of the LDH-FA Series. An infrared picosecond pulsed diode laser acts as a seed laser for a fiber amplifier. The amplified output is converted to green or yellow picosecond pulses. The laser heads emit either a collimated beam or from a PM fiber with FC/APC fiber connector.