Bochum 2015 – scientific programme
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K: Fachverband Kurzzeitphysik
K 4: Lasersysteme und deren Anwendungen II
K 4.2: Talk
Tuesday, March 3, 2015, 14:20–14:40, HZO 40
Towards an Ytterbium based frequency synthesizer — •Anne-Laure Calendron1,2, Huseyin Cankaya1,2, Luis Zapata1,2,3, Hua Lin3, Giovanni Cirmi1,2, Giulio Rossi1,2, Oliver Mücke1,2, and Franz Kärtner1,2,3 — 1Center for Free-Electron Laser Science, Deutsches Elektronen Synchrotron, and Department of Physics, University of Hamburg, Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Hamburg, Germany — 3Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, MIT, Cambridge, USA
Attosecond pulses are sought for experiments enlightening intra-atomic and intermolecular phenomena in attosecond or femtosecond time scale. These pulses can currently only be obtained via high-harmonics generation in gases. Here, we present the first developments of a laser driver system for these applications, delivering a broadband spectrum covering several octaves with high energy: a waveform synthesizer based on parallel amplification.
A broadband, low energy pulse generated via passively CEP stable white-light generation will be split spectrally into several channels and parametrically amplified to higher energies. The CEP-stable white-light is driven by a sub-picosecond Yb:KYW regenerative amplifier. The first stages of the parametric amplification will be pumped with the remaining energy from the regenerative amplifier and the last ones with the output of a cryogenically cooled Yb:YAG composite thin-disc amplifier. The technique for the recombination of the channels to generate a sub- to single cycle pulse will be finally discussed.