1.5 GHz Pulse Generation From a Monolithic Waveguide Laser With a Graphene-Film Saturable Output Coupler

摘要

We fabricate a saturable absorber mirror by coating a graphene film on anoutput coupler mirror. This is then used to obtain Q-switched mode-locking froma diode pumped linear cavity waveguide laser inscribed in Ytterbium-dopedBismuthate Glass, with high slope and optical conversion efficiencies. Thelaser produces mode-locked pulses at 1039nm, with 1.5GHz repetition rate at anaverage 202mW output power. This performance is due to the combination of thegraphene saturable absorber with the high quality laser glass.