title: 66 W average power from a microjoule-class sub-100 fs fiber oscillator.
abstract: Performance scaling of passively mode-locked ultrashort-pulse fiber oscillators in terms of average power, peak power, and pulse energy is demonstrated. A very-large-mode-area fiber laser in an all-positive group-velocity-dispersion ring cavity configuration with intracavity spectral filter, mode-locked by nonlinear polarization evolution, emits 66 W of average power at 76 MHz repetition rate, corresponding to 0.9 μJ pulse energy. The pulses are dechirped to 91 fs outside the cavity with an average power of 60 W remaining after the compressor. The generated pulse peak power is as high as 7 MW.
authors.affiliation: Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Jena, Germany. martin.baumgartl@uni‑jena.de
authors.forename: Martin
authors.initials: M
authors.lastname: Baumgartl
authors.forename: Caroline
authors.initials: C
authors.lastname: Lecaplain
authors.forename: Ammar
authors.initials: A
authors.lastname: Hideur
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann