title: Intermodal four-wave mixing from femtosecond pulse-pumped photonic crystal fiber.
abstract: Large Stokes-shift ( approximately 4700 cm(-1)) four-wave mixing is generated in a deeply normal dispersion regime from a 20 cm commercial large-mode-area photonic crystal fiber pumped by amplified approximately 800 nm femtosecond pulses. The phase-matching condition is realized through an intermodal scheme involving two pump photons in the fundamental fiber mode and a pair of Stokesanti-Stokes photons in a higher-order fiber mode. Over 7% conversion efficiency from the pump input to 586 nm anti-Stokes signal has been attained.
authors.affiliation: Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology,University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors.forename: H
authors.initials: H
authors.lastname: Tu
authors.forename: Z
authors.initials: Z
authors.lastname: Jiang
authors.forename: D L
authors.initials: DL
authors.lastname: Marks
authors.forename: S A
authors.initials: SA
authors.lastname: Boppart