43 W, 1.55 mu m and 12.5 W, 3.1 mu m dual-beam, sub-10 cycle, 100 kHz optical parametric chirped pulse amplifier

We present a 100 kHz optical parametric chirped pulse amplifier (OPCPA) developed for strong-field attosecond physics and soft-x-ray transient absorption experiments. The system relies on noncollinear potassium titanyl arsenate booster OPCPAs and is pumped by a 244 W, 1.1 ps Yb:YAG Innoslab chirped pulse laser amplifier. Two optically synchronized infrared output beams are simultaneously available: a 430 mu J, 51 fs, carrier-envelope phase stable beam at 1.55 mu m and an angular-dispersion-compensated, 125 mu J, 73 fs beam at 3.1 mu m. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.