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Proceedings Paper

mJ pulse-energy fiber lasers based on Yb-doped photonic crystal fibers
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Paper Abstract

Ytterbium-doped double-clad photonic crystal fibres (PCF) are ideal candidates for amplification of diffraction limited pulses to energies of several mJ. The combination of large mode field diameter (MFD), large pump area and high numerical aperture allows for low cost multimode diode pumping of short fiber lengths with high pump absorption and high thresholds for detrimental non-linear effects. We present results from ns-pulsed Q-switched laser and MOPA systems with pulse energies exceeding 1mJ and peak powers up to 17kW, by using a PCF with MFD of 24&mgr;m. The results are scalable with the PCF MFD to much higher pulse energies. Recent reports on truly single mode PCF with MFD up to 100&mgr;m indicates in this way, that pulse energies exceeding 10mJ could be reached.

Paper Details

Date Published: 21 February 2007
PDF: 10 pages
Proc. SPIE 6453, Fiber Lasers IV: Technology, Systems, and Applications, 64531X (21 February 2007); doi: 10.1117/12.699844
Show Author Affiliations
Thomas Feuchter, NKT Research and Innovation A/S (Denmark)
Ole Lumholt, Crystal Fibre A/S (Denmark)

Published in SPIE Proceedings Vol. 6453:
Fiber Lasers IV: Technology, Systems, and Applications
Donald J. Harter; Andreas Tünnermann; Jes Broeng; Clifford Headley, Editor(s)

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