title: Nonlinear-optical spectral transformation of few-cycle laser pulses in photonic-crystal fibers.
abstract: Photonic-crystal fibers with special dispersion profiles are shown to provide a high efficiency of spectral transformation of chirped sub-6-fs Ti:sapphire laser pulses. With the wavelength of zero group-velocity dispersion of the fiber lying within the broad spectrum of the input few-cycle pulse, the output spectra feature well-resolved spectral peaks, indicative of soliton self-frequency shift, four-wave mixing, and Cherenkov emission of dispersive waves. We demonstrate that up to 3% of radiation energy at the output of the fiber can be confined within a spectrally isolated soliton peak centered at , which is ideally suited as a seed for Nd:YAG- and ytterbium-based laser devices.
authors.affiliation: Physics Department, International Laser Center, M. V. Lomonosov Moscow State University, Vorob'evy gory, Moscow 119992, Russia.
authors.forename: E E
authors.initials: EE
authors.lastname: Serebryannikov
authors.forename: A M
authors.initials: AM
authors.lastname: Zheltikov
authors.forename: N
authors.initials: N
authors.lastname: Ishii
authors.forename: C Y
authors.initials: CY
authors.lastname: Teisset
authors.forename: S
authors.initials: S
authors.lastname: Köhler
authors.forename: T
authors.initials: T
authors.lastname: Fuji
authors.forename: T
authors.initials: T
authors.lastname: Metzger
authors.forename: F
authors.initials: F
authors.lastname: Krausz
authors.forename: A
authors.initials: A
authors.lastname: Baltuska