Open AccessA high power photonic crystal fiber laser oscillator based on nonlinear polarization rotation mode-locking
Author(s) -
Dapeng Zhang,
Minglie Hu,
Chen Xie,
Li Chai,
Qingyue Wang
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.044206
Subject(s) - materials science , optics , fiber laser , laser , photonic crystal fiber , femtosecond , optoelectronics , physics , wavelength
A high power femtosecond fiber laser based on a Yb-doped large mode area photonic crystal fiber operating in an all-normal dispersion regime is experimentally demonstrated. A ring laser cavity is used without any elements for dispersion compensation. Stable mode-locking is achieved through nonlinear polarization rotation and the dissipative function of a filter. The laser directly outputs 1.03 ps chirped pulses at a 49.09 MHz repetition rate for an average power of 10 W, corresponding to a pulse energy of 202 nJ. The pulses are compressed to 95.5 fs with a grating pair outside the cavity.