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Nanosecond pulse generation in a passively Q-switched Yb-doped fiber laser by Cr4+:YAG saturable absorber

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5 Author(s)
Laroche, M. ; Centre Interdisciplinaire de Recherches Ions Lasers, Caen, France ; Gilles, H. ; Girard, S. ; Passilly, N.
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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.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 6 )