title: Compact 3-8  μm supercontinuum generation in a low-loss As2Se3step-index fiber.
abstract: A mid-infrared supercontinuum source spanning from 3 to 8 μm is demonstrated using a low-loss As2Se3commercial step-index fiber. A maximum average output power of 1.5 mW is obtained at a low repetition rate of 2 kHz. Thanks to the low NA step-index fiber, the output is single mode for wavelengths above ∼5  μm. The pump source consists of an erbium-doped ZrF4-based in-amplifier supercontinuum source spanning from 3 to 4.2 μm. The effects of both the pump power and As2Se3fiber length on the output characteristics are studied. To the best of our knowledge, this is the first compact supercontinuum source ever reported to reach 8 μm in a standard step-index fiber.
authors.forename: Louis-Rafaël
authors.initials: LR
authors.lastname: Robichaud
authors.forename: Vincent
authors.initials: V
authors.lastname: Fortin
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Gauthier
authors.forename: Stéphane
authors.initials: S
authors.lastname: Châtigny
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Couillard
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Delarosbil
authors.forename: Réal
authors.initials: R
authors.lastname: Vallée
authors.forename: Martin
authors.initials: M
authors.lastname: Bernier