CC BY 4.0 UnportedMero, MarkHeiner, ZsuzsannaPetrov, ValentinRottke, HorstBranchi, FedericoThomas, Gabrielle M.Vrakking, Marc J. J.2023-06-052023-06-052018https://oa.tib.eu/renate/handle/123456789/12385http://dx.doi.org/10.34657/11417We 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 μJ, 51 fs, carrier-envelope phase stable beam at 1.55 μm and an angular-dispersion-compensated, 125 μJ, 73 fs beam at 3.1 μm.enghttps://creativecommons.org/licenses/by/4.0/530Chirp modulationOptical pumpingParametric amplifiersX raysYttrium aluminum garnetArticle