title: Stretcher-free high energy nonlinear amplification of femtosecond pulses in rod-type fibers.
abstract: We report on the study of direct amplification of femtosecond pulses in an 80 mum core diameter microstructured Yb-doped rod-type fiber amplifier in the nonlinear regime. The system includes a compact single grating compressor for the compensation of the small dispersion in the amplifier. With a 1250 line/mm (l/mm) grating-based compressor, pulses as short as 49 fs with 870 nJ pulse energy and 12 MW peak power are obtained. Alternatively, the use of a 1740 l/mm grating allows the production of higher quality pulses of 70 fs, 1.25 microJ pulse energy, and 16 MW peak power.
authors.affiliation: Centre Lasers Intenses et Applications, Université de Bordeaux 1, CNRS, CEA 351 cours de la Libération, 33405 Talence, France. zaouter@celia.u-bordeaux1.fr
authors.forename: Y
authors.initials: Y
authors.lastname: Zaouter
authors.forename: D N
authors.initials: DN
authors.lastname: Papadopoulos
authors.forename: M
authors.initials: M
authors.lastname: Hanna
authors.forename: J
authors.initials: J
authors.lastname: Boullet
authors.forename: L
authors.initials: L
authors.lastname: Huang
authors.forename: C
authors.initials: C
authors.lastname: Aguergaray
authors.forename: F
authors.initials: F
authors.lastname: Druon
authors.forename: E
authors.initials: E
authors.lastname: Mottay
authors.forename: P
authors.initials: P
authors.lastname: Georges
authors.forename: E
authors.initials: E
authors.lastname: Cormier