8 watts actively mode-locked Ytterbium doped fiber laser delivering 15 ps pulses at 40 MHz

Several industrial applications require highly reliable and efficient laser systems delivering high average power in the modelocking regime. For this purpose, the frequency feedback laser architecture which is based on doped fibers and acousto-optic modulator has numerous advantageous compared to passive ML with SES AM. In order to investigate the power scalability of the studied concept, two different lasers were built with Ytterbium doped polarization maintaining Photonic Crystal fibers.