title: All-fiber ytterbium femtosecond laser without dispersion compensation.
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.
authors.affiliation: Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany. m.schultz@lzh.de
authors.forename: Michael
authors.initials: M
authors.lastname: Schultz
authors.forename: Heike
authors.initials: H
authors.lastname: Karow
authors.forename: Oliver
authors.initials: O
authors.lastname: Prochnow
authors.forename: Dieter
authors.initials: D
authors.lastname: Wandt
authors.forename: Uwe
authors.initials: U
authors.lastname: Morgner
authors.forename: Dietmar
authors.initials: D
authors.lastname: Kracht