Hannover 2020 – wissenschaftliches Programm
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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 2: Laser Systems
K 2.6: Vortrag
Dienstag, 10. März 2020, 15:15–15:30, f428
Attosecond streaking of an infrared parametric waveform synthesizer — •Fabian Scheiba1, Giulio Maria Rossi1, Roland E. Mainz1, Yudong Yang1,2, Miguel A. Silva-Toledo1, Phillip D. Keathley Keathley3, Giovanni Cirmi1,2, and Franz X. Kärtner1,2 — 1Center for Free-Electron Laser Science CFEL and Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany and Physics Department, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany — 3Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
Synthesis of optical fields based on optical parametric amplifiers (OPAs) is a promising approach for energy- and wavelength-scalable sources. Here, a NIR ((0.65-0.95) µm) and IR ((1.2-2.2) µm) spectral channel with a relative phase stability of 70 mrad are synthesized to a >1.5 octave spanning pulse with a measured CE-phase stability of 233 mrad, a central wavelength of 1.4 µm and a FWHM duration down to 2.8 fs. The full spatio-temporal stabilization allows for the generation of continuous XUV spectra via high harmonic generation (HHG) in gases with an energy stability of 5.9% rms. Attosecond streaking experiments visualize the measured electric field waveforms generated and prove the excellent long-term pulse-to-pulse stability as well as versatility in shaping the synthesized waveforms to non-sinusoidal fields in the sub-cycle limit.