An all-fiber, resonantly pumped, gain-switched, 2 mu m Tm-doped silica fiber laser

作者：Swiderski J^*; Maciejewska M; Kwiatkowski J; Mamajek M

来源：Laser Physics Letters, 2013, 10(1): 015107.

DOI：10.1088/1612-2011/10/1/015107

An all-fiber, gain-switched, single-mode, thulium-doped silica fiber laser operating at a wavelength of 1994.6 nm was developed. The laser was pumped by a 1.55 mu m master oscillator power amplifier (MOPA) system and operated at a repetition rate ranging from 50 to 300 kHz. Different configurations of the laser cavity were tested. When operating at a 100 kHz repetition rate the laser delivered a maximum average power as high as 1.08 W with a slope efficiency of 49%. For a repetition rate of 50 kHz, stable 23 ns pulses with an energy of 15.3 mu J, corresponding to a peak power of 623 W, were achieved. We also report, to the best of our knowledge, the first demonstration of 2 mu m gain-switched, mode-locked pulses with 100% modulation depth obtained in a Tm-doped fiber laser.

• 出版日期2013-1