title: 500 kHz OPCPA delivering tunable sub-20 fs pulses with 15 W average power based on an all-ytterbium laser.
abstract: An optical parametric chirped pulse amplifier fully based on Yb lasers at 500 kHz is described. Passive optical-synchronization is achieved between a fiber laser-pumped white-light and a 515 nm pump produced with a 200 W picosecond Yb:YAG InnoSlab amplifier. An output power up to 19.7 W with long-term stability of 0.3% is demonstrated for wavelength tunable pulses between 680 nm and 900 nm and spectral stability of 0.2%; 16.5 W can be achieved with a bandwidth supporting 5.4 fs pulses. We demonstrate compression of 30 µJ pulses to sub-20 fs duration with a prism compressor, suitable for high harmonic generation.
authors.forename: Michele
authors.initials: M
authors.lastname: Puppin
authors.forename: Yunpei
authors.initials: Y
authors.lastname: Deng
authors.forename: Oliver
authors.initials: O
authors.lastname: Prochnow
authors.forename: Jan
authors.initials: J
authors.lastname: Ahrens
authors.forename: Thomas
authors.initials: T
authors.lastname: Binhammer
authors.forename: Uwe
authors.initials: U
authors.lastname: Morgner
authors.forename: Marcel
authors.initials: M
authors.lastname: Krenz
authors.forename: Martin
authors.initials: M
authors.lastname: Wolf
authors.forename: Ralph
authors.initials: R
authors.lastname: Ernstorfer