title: Generation of three-octave-spanning transient Raman comb in hydrogen-filled hollow-core PCF.
abstract: A noise-seeded transient comb of Raman sidebands spanning three octaves from 180 to 2400 nm, is generated by pumping a hydrogen-filled hollow-core photonic crystal fiber with 26-μJ, 300-fs pulses at 800 nm. The pump pulses are spectrally broadened by both Kerr and Raman-related self-phase modulation (SPM), and the broadening is then transferred to the Raman lines. In spite of the high intensity, and in contrast to bulk gas-cell based experiments, neither SPM broadening nor ionization are detrimental to comb formation.
authors.forename: F
authors.initials: F
authors.lastname: Tani
authors.forename: F
authors.initials: F
authors.lastname: Belli
authors.forename: A
authors.initials: A
authors.lastname: Abdolvand
authors.forename: J C
authors.initials: JC
authors.lastname: Travers
authors.forename: P St J
authors.initials: PS
authors.lastname: Russell