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Low-nonlinearity single-transverse-mode ytterbium-doped photonic crystal fiber amplifier

: Limpert, J.; Liem, A.; Reich, M.; Schreiber, T.; Nolte, S.; Zellmer, H.; Tünnermann, A.; Broeng, J.; Petersson, A.; Jakobsen, C.

Postprint (672 KByte; PDF; )

Optics Express 12 (2004), Nr.7, S.1313-1319
ISSN: 1094-4087
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IOF ()
laser; fiber; nonlinear optics; fiber design and fabrication; ultrafast laser

We report on an air-clad large-core single-transverse-mode ytterbium-doped photo nic crystal fiber with a mode-field-diameter of 35 µm, corresponding to a mode-f ield-area of ~1000 µm2. In a first experiment this fiber is used to amplify 10-ps pulses to a peak power of 60 kW without significant spectral broadening due to self-phase modulation allowing for the frequency up-conversion of these pulses using narrow-bandwidth phase matched nonlinear crystals.