Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
K: Fachverband Kurzzeit- und angewandte Laserphysik
K 2: Laser Systems
K 2.7: Vortrag
Dienstag, 10. März 2020, 15:30–15:45, f428
High-harmonic generation control with intense, infrared, synthesized waveforms — •Miguel A. Silva-Toledo1, Roland E. Mainz1, Yudong Yang1,2, Giulio Maria Rossi1, Fabian Scheiba1, Guangjin Ma1, Phillip D. 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 — 2The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany — 3Research Laboratory of Electronics, Massachussets Institute of Technology, Cambridge, Massachussets 02139, USA
Sub-cycle shaping of light fields driving high-harmonic generation (HHG) allows full amplitude- and phase-control of coherent extreme ultraviolet (XUV) to soft X-ray radiation. Here, we show such control in the XUV regime via tailored driver pulses, delivered by an optical parametric amplification-based waveform synthesizer. Synthesis is achieved by combining near-infrared (NIR) (0.65 - 1.0 µm, ∼ 6 fs, ∼ 150 µJ) and infrared (IR) (1.2 - 2.2 µm, ∼ 8 fs, ∼ 500 µJ) pulses. Upon variation of the CEP and relative phase between NIR and IR pulses, we modulate the spectrum and yield of attosecond pulse trains and of isolated attosecond pulses (IAPs). Attosecond streaking measurements characterize the driver pulses and IAPs. Experimental observations are also combined with macroscopic HHG simulations. Our study will facilitate research on optimal driver fields for efficient soft X-ray HHG.