title: Generation of broadly tunable sub-30-fs infrared pulses by four-wave optical parametric amplification.
abstract: We report on the generation of sub-30-fs near-IR light pulses by means of broadband four-wave parametric amplification in fused silica. This is achieved by frequency downconversion of visible broadband pulses provided by a commercial blue-pumped beta-barium borate crystal-based noncollinear optical parametric amplifier. The proposed method produces the IR idler pulses with energy up to ∼20 μJ and tunable in wavelength from 1 to 1.5 μm. The shortest pulse duration is 17.6 fs, measured at 1.2 μm.
authors.affiliation: CNISM and Department of Physics and Mathematics, Università dell'Insubria, Como, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Rubino
authors.forename: J
authors.initials: J
authors.lastname: Darginavicius
authors.forename: D
authors.initials: D
authors.lastname: Faccio
authors.forename: P
authors.initials: P
authors.lastname: Di Trapani
authors.forename: A
authors.initials: A
authors.lastname: Piskarskas
authors.forename: A
authors.initials: A
authors.lastname: Dubietis
mesh_terms: D001881:Borates / Q000737:chemistry; D007259:Infrared Rays; D055620:Optical Phenomena; D013997:Time Factors
chemical_list: D001881:Borates