Ld-Clad-Pumped All-Fiber Tm3+-Doped Silica Fiber Laser

摘要

The CW 39.4 W all-fiber LD-clad-pumped Tm3+-doped fiber laser output is reported with a slope etticiency of 34% in respect to the pump power.The all-fiber laser is made up by progressively splicing the pigtail fiber,matched FBG fiber and Tin-doped fiber.The reflective FBG and Tin-doped fiber end fresnel reflection build up the laser resonance cavity.Due to the multi-mode FBG as the refiective mirror,the output laser spectrum is multi-pealcs at high power output,whereas the total spectrum width is less than 2nm at nearly 1.94μm.