title: Generation of broadband mid-IR and UV light in gas-filled single-ring hollow-core PCF.
abstract: We report generation of an ultrafast supercontinuum extending into the mid- infrared in gas-filled single-ring hollow-core photonic crystal fiber (SR-PCF) pumped by 1.7 µm light from an optical parametric amplifier. The simple fiber structure offers shallow dispersion and flat transmission in the near and mid-infrared, enabling the generation of broadband spectra extending from 270 nm to 3.1 µm, with a total energy of a few µJ. In addition, we demonstrate the emission of ultraviolet dispersive waves whose frequency can be tuned simply by adjusting the pump wavelength. SR-PCF thus constitutes an effective means of compressing and delivering tunable ultrafast pulses in the near and mid-infrared spectral regions.
authors.forename: Marco
authors.initials: M
authors.lastname: Cassataro
authors.forename: David
authors.initials: D
authors.lastname: Novoa
authors.forename: Mehmet C
authors.initials: MC
authors.lastname: Günendi
authors.forename: Nitin N
authors.initials: NN
authors.lastname: Edavalath
authors.forename: Michael H
authors.initials: MH
authors.lastname: Frosz
authors.forename: John C
authors.initials: JC
authors.lastname: Travers
authors.forename: Philip St J
authors.initials: PS
authors.lastname: Russell