High power continuous wave and pulsed single mode Er:Yb doped double-clad fiber laser

We report two studies, the first allows the generation of a high power laser operating in continuous wave, and the second generates pulses with high average power. Unlike methods using large mode area fibers, we propose a 10 W double-clad Er:Yb doped fiber amplifier pumped at 980 nm with several laser diodes and spliced to pieces of standard single-mode fibers. In continuous wave laser the output power of about 8 W for 40 W pumping power is obtained. The experimental configuration giving a soliton crystal is based on the nonlinear polarization rotation. The soliton crystal is a particular regime; it is characterized by hundreds of pulses homogeneously distributed in unique condensate structure.