title: Cross-phase-modulation-induced instability in photonic-crystal fibers.
abstract: Cross-phase-modulation-induced instability is identified as a significant mechanism for efficient parametric four-wave-mixing frequency conversion in photonic-crystal fibers. Fundamental-wavelength femtosecond pulses of a Cr, forsterite laser are used in our experiments to transform the spectrum of copropagating second-harmonic pulses of the same laser in a photonic-crystal fiber. Efficient generation of sidebands shifted by more than 80 THz with respect to the central frequency of the second harmonic is observed in the output spectrum of the probe field.
authors.affiliation: Physics Department, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia.
authors.forename: E E
authors.initials: EE
authors.lastname: Serebryannikov
authors.forename: S O
authors.initials: SO
authors.lastname: Konorov
authors.forename: A A
authors.initials: AA
authors.lastname: Ivanov
authors.forename: M V
authors.initials: MV
authors.lastname: Alfimov
authors.forename: M
authors.initials: M
authors.lastname: Scalora
authors.forename: A M
authors.initials: AM
authors.lastname: Zheltikov