Near-infrared optical parametric amplifier at 1 MHz directly pumped by a femtosecond oscillator.
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.
Marangoni
Marco
M
Dipartimento di Fisica, Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR piazza L. Da Vinci 32, Milan, Italy. marco.marangoni@polimi.it
Osellame
Roberto
R
Ramponi
Roberta
R
Cerullo
Giulio
G
Steinmann
Andy
A
Morgner
Uwe
U