title: Energetic sub-2-cycle laser with 216  W average power.
abstract: Few-cycle lasers are essential for many research areas such as attosecond physics that promise to address fundamental questions in science and technology. Therefore, further advancements are connected to significant progress in the underlying laser technology. Here, two-stage nonlinear compression of a 660 W femtosecond fiber laser system is utilized to achieve unprecedented average power levels of energetic ultrashort or even few-cycle laser pulses. In a first compression step, 408 W, 320 μJ, 30 fs pulses are achieved, which can be further compressed to 216 W, 170 μJ, 6.3 fs pulses in a second compression stage. To the best of our knowledge, this is the highest average power few-cycle laser system presented so far. It is expected to significantly advance the fields of high harmonic generation and attosecond science.
authors.forename: Steffen
authors.initials: S
authors.lastname: Hädrich
authors.forename: Marco
authors.initials: M
authors.lastname: Kienel
authors.forename: Michael
authors.initials: M
authors.lastname: Müller
authors.forename: Arno
authors.initials: A
authors.lastname: Klenke
authors.forename: Jan
authors.initials: J
authors.lastname: Rothhardt
authors.forename: Robert
authors.initials: R
authors.lastname: Klas
authors.forename: Thomas
authors.initials: T
authors.lastname: Gottschall
authors.forename: Tino
authors.initials: T
authors.lastname: Eidam
authors.forename: András
authors.initials: A
authors.lastname: Drozdy
authors.forename: Péter
authors.initials: P
authors.lastname: Jójárt
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Várallyay
authors.forename: Eric
authors.initials: E
authors.lastname: Cormier
authors.forename: Károly
authors.initials: K
authors.lastname: Osvay
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert