Peterka Pavel, Kasík Ivan, Mat Jec Vlastimil, Kube Ek Václav, Dvo A Ek Pavel
Institute of Radio Engineering and Electronics, Academy of Sciences, Chaberská 57, 18251 Prague, Czech Republic.
Opt Lett. 2006 Nov 15;31(22):3240-2. doi: 10.1364/ol.31.003240.
We present experimental demonstration of an end-pumping scheme based on splicing the multimode pump and single-mode signal fibers directly to a double-clad fiber with a tailored cross section. The method is used to pump a double-clad, erbium- and ytterbium-doped, fiber ring laser. The efficiency of the end-pumping method is tested by determining the slope efficiencies of the fiber ring laser and the fiber laser in a Fabry-Perot configuration. Comparable slope efficiencies are found when both laser configurations have similar output coupler ratios. The developed pumping scheme and double-clad fiber can find applications in cost-effective power fiber amplifiers and lasers.
