▎ 摘 要
NOVELTY - The laser has a laser gain crystal doped with graphene. A graphite plane is placed mutually vertical to the laser gain crystal. The graphene-laser gain crystal is connected with a pumping light source. A coupling system is connected with a laser cavity. USE - Mode-locked laser for graphene sheet. ADVANTAGE - The laser has high efficiency, and is compact and small in volume. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a mode-locked laser.