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High-power rod-type photonic crystal fiber laser

 
: Limpert, J.; Deguil-Robin, N.; Manek-Hönninger, I.; Salin, F.; Röser, F.; Liem, A.; Schreiber, T.; Nolte, S.; Zellmer, H.; Tünnermann, A.; Broeng, J.; Petersson, A.; Jakobsen, C.

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Postprint (269 KByte; PDF; )

Optics Express 13 (2005), No.4, pp.1055-1058
ISSN: 1094-4087
English
Journal Article, Electronic Publication
Fraunhofer IOF ()
amplifiers (electronic); amplifier system

Abstract
We report on a novel ytterbium-doped fiber design that combines the advantages of rod and fiber gain media. The fiber design has outer dimensions of a rod laser, meaning a diameter in the range of a few millimeters and a length of just a few tens of centimeters, and includes two important waveguide structures, one for pump radiation and one for laser radiation. We obtained 120-W output power in single-mode beam quality from a 48-cm-long fiber cane that corresponds to an extracted power of 250 W/m. The fiber has significantly reduced nonlinearity, which therefore allows for scalability in the performance of a high-peak-power fiber laser and amplifier system.

: http://publica.fraunhofer.de/documents/N-39284.html