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Opt Express. 2008 Nov 24;16(24):19562-7. doi: 10.1364/oe.16.019562.

All-fiber ytterbium femtosecond laser without dispersion compensation.

Optics express

Michael Schultz, Heike Karow, Oliver Prochnow, Dieter Wandt, Uwe Morgner, Dietmar Kracht

Affiliations

  1. Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany. [email protected]

PMID: 19030043 DOI: 10.1364/oe.16.019562

Abstract

We report on an all-fiber femtosecond ytterbium laser without dispersion compensation consisting of all-normal dispersion fibers. Mode-locking was achieved by nonlinear polarization evolution in combination with additional amplitude modulation generated by a fiber-based spectral filter. The generated pulses were highly chirped and had a maximum pulse energy of 1.8 nJ. The output pulse duration was 7.6 ps and could be dechirped to 179 fs.

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