title: High-average-power 2 μm few-cycle optical parametric chirped pulse amplifier at 100 kHz repetition rate.
abstract: Sources of long wavelengths few-cycle high repetition rate pulses are becoming increasingly important for a plethora of applications, e.g., in high-field physics. Here, we report on the realization of a tunable optical parametric chirped pulse amplifier at 100 kHz repetition rate. At a central wavelength of 2 μm, the system delivered 33 fs pulses and a 6 W average power corresponding to 60 μJ pulse energy with gigawatt-level peak powers. Idler absorption and its crystal heating is experimentally investigated for a BBO. Strategies for further power scaling to several tens of watts of average power are discussed.
authors.forename: Yariv
authors.initials: Y
authors.lastname: Shamir
authors.forename: Jan
authors.initials: J
authors.lastname: Rothhardt
authors.forename: Steffen
authors.initials: S
authors.lastname: Hädrich
authors.forename: Stefan
authors.initials: S
authors.lastname: Demmler
authors.forename: Maxim
authors.initials: M
authors.lastname: Tschernajew
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann