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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 2: Poster
K 2.2: Poster
Dienstag, 15. März 2022, 16:30–18:30, P
Attosecond streaking of an infrared parametric waveform synthesizer — •Fabian Scheiba1,2,3, Giulio Maria Rossi1, Roland E. Mainz1, Miguel A. Silva-Toledo1,3, Yudong Yang1, Phillip D. Keathley4, Giovanni Cirmi1,2, and Franz X. Kärtner1,2,3 — 1Center for Free-Electron Laser Science CFEL and Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany — 3Universität Hamburg, Fachbereich Physik, Jungiusstraße 9, 20355 Hamburg — 4Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
Attosecond streaking measurements provide the temporal information of both, the ionizing XUV pulse and the infrared streak field. The method is utilized to characterize >1.5 octave spanning infrared (IR) waveforms as generated by our parametric waveform synthesizer and at the same time to characterize the isolated attosecond pulse (IAP) continua as generated via high harmonic generation (HHG) in gases. Here, a near-IR ((0.65-0.95) µm) and IR ((1.2-2.2) µm) spectral channel with a relative phase stability of 70 mrad are synthesized, resulting in a sub-cycle pulse of 1.4 µm central wavelength. Attosecond streaking measurements 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 that in return allows for controlling the IAP in bandwidth and central energy in a single focussing geometry.