All fiber Er-Tm Q-switched laser

Abstract

For the first time we have suggested and realized passive Q-switched cladding pumped Er-doped fiber laser with a saturable absorber based on Tm-doped fiber. The pulse duration was of 100 ns, the pulse energy – 0.35 mJ, the peak power – 3.5 kW while the average power is less than 1 W. The laser is perspective for technology processes and medicine.