Work

Spin–orbit effects in atomic high-harmonic generation

Year: 2014

Type: article

Abstract: Spin–orbit interactions lead to small energy gaps between the outermost p 1/2 and p 3/2 shells of noble gas atoms. Strong-field pulses tunnel-ionize an electron out of either shell resulting in spin–orbit-driven hole motion. These hole dynamics affect the high-harmonic generation (HHG) yield. However, the spectral shape as well as the angular distribution of the HHG emission is not influenced by spin–orbit coupling. We demonstrate the spin–orbit effect on atomic krypton by solving the multi-electron Schrödinger equation with the time-dependent configuration-interaction singles approach. We also provide pulse parameters where this effect can be identified in experiments through an enhancement in the HHG yield as the wavelength of the strong-field pulse increases.

Source: Journal of Physics B Atomic Molecular and Optical Physics

DOI: 10.1088/0953-4075/47/12/124026

Authors: Stefan Pabst, Robin Santra

Institutions: Deutsches Elektronen-Synchrotron DESY, Center for Free-Electron Laser Science, Universität Hamburg

Language: English

Topic: Laser-Matter Interactions and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: Deutsche Forschungsgemeinschaft

Awards: G2073904935, G213344254