10 W CEP-stable few-cycle source at 2 µm with 100 kHz repetition rate

Intense Mid-IR pulses with controlled waveforms are an important tool to extend the ponderomotive cut-off in strong field experiments. Especially in high-harmonic generation this can be used towards the generation of water-window harmonics [1]. To compensate for the strongly reduced signal at longer wavelengths (≈ l -6 ), higher repetition rates are also desirable, pushing the requirements toward high average power systems.