Hannover 2020 – scientific programme

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A: Fachverband Atomphysik

A 2: Attosecond physics I

A 2.4: Talk

Monday, March 9, 2020, 12:00–12:15, f107

Perspectives of high harmonics generation with tailored femtosecond driving pulses — •Lars Englert, Marcel Behrens, Felix Otten, and Matthias Wollenhaupt — Carl von Ossietzky Universität Oldenburg, Institut für Physik, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg

In the recent years, we presented work on the coherent control of ultrafast quantum dynamics in tailored femtosecond laser fields, including the generation of polarization-shaped femtosecond laser pulses [1], the tomographic reconstruction of sculpted photoelectron wave packets [2] and the photoelectron circular dichroism (PECD) of chiral molecules [3]. Currently, we combine a commercial table top high harmonics generation (HHG) source, providing XUV radiation up to 100 eV, with polarization shaping of the femtosecond IR driving field to extend our expertise in coherent control from the IR/VIS to the XUV regime. In this talk, we present an overview of the attosecond beamline and discuss perspectives for the oncoming experiments on the control of the HHG process, in terms of gating mechanisms for the generation isolated attosecond pulses and polarization control for the generation of circularly polarized XUV pulses, as well as single-photon PECD and chiral HHG in the XUV regime.

[1] S. Kerbstadt et al.: Opt. Express 25, 12518 (2017)

[2] D. Pengel et al.: Phys. Rev. Lett. 118, 053003 (2017)

[3] C. Lux et al.: Chem. Phys. Chem. 16, 115 (2015)