▎ 摘　　要

NOVELTY - The absorber has a reflecting film layer located between a saturable absorption layer and a substrate layer, where the saturable absorbing layer is made of graphene, graphene oxide or a functionalized graphene in injection molding mode. The reflection film layer is made of gold film, silver film, copper film or aluminum film. The substrate layer is made of silicon or silicon dioxide. USE - Graphene based reflection-type saturable absorber. ADVANTAGE - The absorber has quick recovery time, adjustable depth and wavelength and low production cost, and realizes practical, simple, efficient, stable and reliable working performance, high damage threshold and convenient large-scale production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for manufacturing a graphene based reflection-type saturable absorber. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a graphene based reflection-type saturable absorber.