Title :
Nanosecond pulse generation in a passively Q-switched Yb-doped fiber laser by Cr4+:YAG saturable absorber
Author :
Laroche, M. ; Gilles, H. ; Girard, S. ; Passilly, N. ; Aït-Ameur, K.
Author_Institution :
Centre Interdisciplinaire de Recherches Ions Lasers, Caen, France
fDate :
3/15/2006 12:00:00 AM
Abstract :
We explored efficient nanosecond pulse generation in a passively Q-switched cladding-pumped Yb-doped fiber laser by use of an external-cavity configuration containing a Cr4+:YAG saturable absorber crystal. By exploiting passive Q-switched regime and stimulated Brillouin scattering, pulses of durations as short as 2.7 ns, corresponding to a peak power of ∼9 kW, have been achieved. The laser was tunable over 70 nm and green output power generation was obtained by external frequency doubling in a KTP crystal.
Keywords :
Q-switching; chromium; fibre lasers; laser cavity resonators; laser tuning; optical harmonic generation; optical materials; optical pulse generation; optical pumping; optical saturable absorption; stimulated Brillouin scattering; ytterbium; yttrium compounds; Cr4+:YAG saturable absorber; KTP crystal; Y3Al5O12:Cr4+; Yb-doped fiber laser; cladding pumping; external frequency doubling; laser tuning; nanosecond pulse generation; passive Q-switching; stimulated Brillouin scattering; Brillouin scattering; Chromium; Fiber lasers; Laser beams; Optical pulse generation; Optical pulses; Power generation; Power lasers; Pulse amplifiers; Pulse generation; Brillouin scattering; double-clad fiber (DCF) lasers; nonlinear optics;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.871678
