M. Baumgartl,
F. Jansen,
F. Stutzki,
C. Jauregui,
B. Ortac,
J. Limpert,
and A. Tünnermann
High average and peak power femtosecond large-pitch photonic-crystal-fiber laser
Opt. Lett., 36 :244 (January 2011)
High average and peak power femtosecond large-pitch photonic-crystal-fiber laser
Opt. Lett., 36 :244 (January 2011)
Abstract:
We report on the generation of high-average-power and high-peak-power ultrashort pulses from a mode-locked fiber laser operating in the all-normal-dispersion regime. As gain medium, a large-mode-area ytterbium-doped large-pitch photonic-crystal fiber is used. The self-starting fiber laser delivers 27 W of average power at 50.57 MHz repetition rate, resulting in 534 nJ of pulse energy. The laser produces positively chirped 2 ps output pulses, which are compressed down to sub - 100 fs , leading to pulse peak powers as high as 3.2 MW.