钛宝石激光泵浦的掺Yb光纤激光器

Operation of a Ytterbium-doped Fiber Laser Pumped by Ti:sapphire Laser

报道了国产掺Yb石英光纤激光器的成功运转。用波长为915nm的钛宝石激光泵浦3．5m长的光纤时，激光中心波长为1．03μm，激光阈值可低至5mW，斜效率可达68％。用860nmn泵浦能得到相似的结果。另外，当光纤短于0．5m时能得到974nm激光振荡。

The operation of a home-made ytterbium-doped fiber laser is reported. When a3.5m ytterbium-doped fiber is pumped with a Ti: sapphire laser at 915nm, lasing at awavelength of 1.03 μm occurs. The laser operates at a threshold as low as 5 mW with aslope efficiency as high as 68%. Similar results can also be obtained when the fiber laser ispumped at 860 nm. In addition, when a Yb-doped fiber shorter than 0. 5 m was used, laseraction at 974 nm was obtained.