title: Watt-level fiber-based femtosecond laser source tunable from 2.8 to 3.6  μm.
abstract: The development of compact and reliable ultrafast sources operating in the mid-infrared region could lead to major advances in both fundamental and applied sciences. In this Letter, we report on a simple and efficient laser system based entirely on erbium-doped fluoride glass fibers that generates high-energy Raman soliton pulses tunable from 2.8 to 3.6 μm at a high average output power. Stable 160 fs pulses at 3.4 μm with a maximum energy of 37 nJ, a corresponding average output power above 2 W, and an estimated peak power above 200 kW are demonstrated. This tunable source promises direct applications in laser processing of polymers and biological materials.
authors.forename: Simon
authors.initials: S
authors.lastname: Duval
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Gauthier
authors.forename: Louis-Rafaël
authors.initials: LR
authors.lastname: Robichaud
authors.forename: Pascal
authors.initials: P
authors.lastname: Paradis
authors.forename: Michel
authors.initials: M
authors.lastname: Olivier
authors.forename: Vincent
authors.initials: V
authors.lastname: Fortin
authors.forename: Martin
authors.initials: M
authors.lastname: Bernier
authors.forename: Michel
authors.initials: M
authors.lastname: Piché
authors.forename: Réal
authors.initials: R
authors.lastname: Vallée