▎ 摘　　要

NOVELTY - The system has a full polarization maintaining erbium-doped fiber laser which adopts whole polarization maintaining fiber resonator cavity. Polarization maintaining fiber and polarization maintaining device are precisely aligned with Fujikura optical fiber welding machine along slow axis. A reflective graphene saturable absorber is provided with a mirror. Reverse pumping is realized by a 976 nm laser diode with a single-mode pigtail output. USE - Fiber laser system. ADVANTAGE - The output of the highly stable single linearly polarized femtosecond laser light source can be switched only by adjusting the mirror angles and continuous locked mode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view showing reflection of mirror. Incident beam power (P) Incident beam cross-sectional radius (R) Light spot long half axial length (R')