title: Near-infrared optical parametric amplifier at 1 MHz directly pumped by a femtosecond oscillator.
abstract: We demonstrate a high-average-power optical parametric amplifier directly pumped by a cavity-dumped Yb:KYW mode-locked laser oscillator at 1 MHz repetition rate. The two-stage system uses periodically poled lithium niobate crystals both for optical parametric generation and for power amplification. We obtain average powers as high as 190 mW with 220 fs average pulse widths and wavelength tunability in the 1.3-1.6 microm (signal) and 3.1-4.6 microm (idler) range.
authors.affiliation: Dipartimento di Fisica, Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR piazza L. Da Vinci 32, Milan, Italy. marco.marangoni@polimi.it
authors.forename: Marco
authors.initials: M
authors.lastname: Marangoni
authors.forename: Roberto
authors.initials: R
authors.lastname: Osellame
authors.forename: Roberta
authors.initials: R
authors.lastname: Ramponi
authors.forename: Giulio
authors.initials: G
authors.lastname: Cerullo
authors.forename: Andy
authors.initials: A
authors.lastname: Steinmann
authors.forename: Uwe
authors.initials: U
authors.lastname: Morgner