title: Pressure-controlled phase matching to third harmonic in Ar-filled hollow-core photonic crystal fiber.
abstract: We report tunable third-harmonic generation (THG) in an Ar-filled hollow-core photonic crystal fiber, pumped by broadband <2 microJ, 30 fs pulses from an amplified Ti:sapphire laser system. The overall dispersion is precisely controlled by balancing the negative dielectric susceptibility of the waveguide against the positive susceptibility of the gas. We demonstrate THG to a higher-order guided mode and show that the phase-matched UV wavelength is tunable by adjusting the gas pressure.
authors.affiliation: Max Planck Institute for the Science of Light, Günther-Scharowsky-Strasse 1, 91058 Erlangen, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Nold
authors.forename: P
authors.initials: P
authors.lastname: Hölzer
authors.forename: N Y
authors.initials: NY
authors.lastname: Joly
authors.forename: G K L
authors.initials: GK
authors.lastname: Wong
authors.forename: A
authors.initials: A
authors.lastname: Nazarkin
authors.forename: A
authors.initials: A
authors.lastname: Podlipensky
authors.forename: M
authors.initials: M
authors.lastname: Scharrer
authors.forename: P St J
authors.initials: PS
authors.lastname: Russell
mesh_terms: D001128:Argon; D053844:Lasers, Solid-State; D017785:Photons; D011312:Pressure
chemical_list: D001128:Argon