▎ 摘　　要

NOVELTY - The laser unit (100) has a gain medium part (101) formed with a channel waveguide (103). A graphene saturable absorption body (105) is equipped in an end of the channel waveguide. A light absorption layer coats graphene on the channel waveguide. The channel waveguide is printed within femto second and formed with two straight lines that are arranged in the gain medium part. The graphene saturable absorption body covers a part of an upper base or a lower base that is in contact with a part of a laser emitting surface of the gain medium part. USE - Micro type nano-second pulse laser unit. ADVANTAGE - The graphene is directly transferred in the gain medium part of pulse oscillation channel waveguide laser and a light switching structure so as to reduce instability of solid laser of centimeter scale and improve stability of nanosecond pulse generating operation of laser. The laser unit can perform optical absorption of the graphene for performing optical switching process by controlling polymer layer thickness of the graphene transferred to a laser output end so as to improve determination interest of channel waveguide. DETAILED DESCRIPTION - The saturable absorption body is a Q- switching unit. The light absorption layer is a polymethyl methacrylate polymer layer. An INDEPENDENT CLAIM is also included for a method for manufacturing a micro type nano-second pulse laser unit. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a micro type nano-second pulse laser unit. Micro type nano-second pulse laser unit (100) Gain medium part (101) Channel waveguide (103) Graphene saturable absorption body (105) Pump light source (111)