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Millijoule pulse energy Q-switched short-length fiber laser

: Schmidt, O.; Rothhardt, J.; Röser, F.; Linke, S.; Schreiber, T.; Rademaker, K.; Limpert, J.; Ermeneux, S.; Yvernault, P.; Salin, F.; Tünnermann, A.


Optics Letters 32 (2007), No.11, pp.1551-1553
ISSN: 0146-9592
Journal Article
Fraunhofer IOF ()

We report on a Q-switched short-length fiber laser producing 100 W of average output power at 100 kHz repetition rate and pulse durations as short as 17 ns. Up to 2 mJ of energy and sub-10-ns pulse duration are extracted at lower repetition rates. This performance is obtained by employing a rod-type ytterbium-doped photonic crystal fiber with a 70 mu m core as gain medium, allowing for very short pulse durations, high energy storage, and emission of a single-transverse-mode beam.