Beam-Shaping Technique for End-Pumping Yb-Doped Fiber Laser with Two Laser-Diode Arrays

摘要

We describe a beam-shaping technique for two air-cooled high-power laser-diode arrays for pumping an Yb-doped double-clad fiber laser. In this technique, two right-angle prisms are employed to reshape the pumping beam. As a result, the beams of two air-cooled high-power laser-diode arrays were effectively coupled to the Yb-doped double-clad fiber, and a single-mode output beam of 23.3 W in the 1,080-nm region was obtained.