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Compact high-energy Q-switched cladding-pumped fiber laser with a tuning range over 40 nm

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5 Author(s)
C. C. Renaud ; Optoelectron. Res. Centre, Southampton Univ., UK ; R. J. Selvas-Aguilar ; J. Nilsson ; P. W. Turner
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We describe a compact Q-switched diode pumped double-clad ytterbium-doped fiber laser. The fiber laser was bidirectionally pumped by two laser diodes (2 W of output power each) via two side-injecting pump-couplers. We used a large multimode core of 15 μm diameter to increase the laser gain volume and thus to achieve higher pulse energy. Experimentally this laser produced pulses with energy up to 170 μJ with a peak power of 2 kW (at a low repetition rate of 500 Hz) and was tunable from 1060 to 1100 nm.

Published in:

IEEE Photonics Technology Letters  (Volume:11 ,  Issue: 8 )