Chiral high-harmonic generation and spectroscopy on solid surfaces using polarization-tailored strong fields.

ABSTRACT: Strong-field methods in solids enable new strategies for ultrafast nonlinear spectroscopy and provide all-optical insights into the electronic properties of condensed matter in reciprocal and real space. Additionally, solid-state media offers unprecedented possibilities to control high-harmonic generation using modified targets or tailored excitation fields. Here we merge these important points and demonstrate circularly-polarized high-harmonic generation with polarization-matched excitation fields for spectroscopy of chiral electronic properties at surfaces. The sensitivity of our approach is demonstrated for structural helicity and termination-mediated ferromagnetic order at the surface of silicon-dioxide and magnesium oxide, respectively. Circularly polarized radiation emanating from a

SUBMITTER: Heinrich T 

PROVIDER: S-EPMC8211651 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature