title: Low-repetition-rate femtosecond operation in extended-cavity mode-locked Yb:CALGO laser.
abstract: We report on an extended-cavity mode-locked laser based on an Yb:CALGO crystal operating either at 27 MHz and 93 fs pulse duration or at 15 MHz and 170 fs duration single-pulse regime. To the best of our knowledge this is the first demonstration of an extended-cavity oscillator based on Yb-doped crystal producing sub-100 fs pulses. The pulse energy was 24 nJ directly at the output of the oscillator (and 17 nJ after compression). Based on a similar design, we also demonstrate an unprecedented double-pulse dual-wavelength femtosecond regime. An explanation of this atypical regime is proposed.
authors.affiliation: Laboratoire Charles Fabry de l'Institut d'Optique, CNRS, Université Paris Sud, Palaiseau, France. dimitris.papadopoulos@institutoptique.fr
authors.forename: D N
authors.initials: DN
authors.lastname: Papadopoulos
authors.forename: F
authors.initials: F
authors.lastname: Druon
authors.forename: J
authors.initials: J
authors.lastname: Boudeile
authors.forename: I
authors.initials: I
authors.lastname: Martial
authors.forename: M
authors.initials: M
authors.lastname: Hanna
authors.forename: P
authors.initials: P
authors.lastname: Georges
authors.forename: P O
authors.initials: PO
authors.lastname: Petit
authors.forename: P
authors.initials: P
authors.lastname: Goldner
authors.forename: B
authors.initials: B
authors.lastname: Viana