title: 58 mJ burst comprising ultrashort pulses with homogenous energy level from an Yb-doped fiber amplifier.
abstract: We report on a laser system producing a burst comprising femtosecond pulses with a total energy of 58 mJ. Every single pulse within this burst has an energy between 27 and 31 μJ. The pump is able to rebuild the inversion fast enough between the pulses, resulting in an almost constant gain for every pulse during the burst. This causes a very homogenous energy distribution during the burst. The output burst has a repetition frequency of 20 Hz, is 200 μs long and, therefore, contains 2000 pulses at a pulse repetition rate of 10 MHz.
authors.affiliation: Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Albert-Einstein-Strasse 15, Jena 07745, Germany. sven.breitkopf@uni-jena.de
authors.forename: Sven
authors.initials: S
authors.lastname: Breitkopf
authors.forename: Arno
authors.initials: A
authors.lastname: Klenke
authors.forename: Thomas
authors.initials: T
authors.lastname: Gottschall
authors.forename: Hans-Jürgen
authors.initials: HJ
authors.lastname: Otto
authors.forename: Cesar
authors.initials: C
authors.lastname: Jauregui
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann