Passively Q-switched erbium all-fiber lasers by use of thulium-doped saturable-absorber fibers.

@article{Tsai2010PassivelyQE,
  title={Passively Q-switched erbium all-fiber lasers by use of thulium-doped saturable-absorber fibers.},
  author={Tzong-Yow Tsai and Yen-Cheng Fang and Shih-Hao Hung},
  journal={Optics express},
  year={2010},
  volume={18 10},
  pages={10049-54}
}
We demonstrate all-fiber passively Q-switched erbium lasers at 1570 nm using Tm(3+)-doped saturable-absorber fibers. The absorption cross section of a Tm(3+)-doped fiber at 1570 nm was measured in a bleaching experiment to be about 1.44 x 10(-20) cm(2). With a thulium-doped fiber, sequential pulses with a pulse energy of 9 microJ and a pulse duration of about 420 ns were stably produced at repetition rates in the range 0.1 to 2 kHz. The maximum pulse repetition rate was 6 kHz, limited by the… CONTINUE READING