Generation of energetic highly elliptical extreme ultraviolet radiation

TL;DR

This paper reports the generation of energetic, coherent extreme ultraviolet radiation with controlled polarization via high harmonic generation using a two-color circularly polarized laser field, enabling new ultrafast chiral studies.

Contribution

It demonstrates a method to produce high-energy XUV radiation with controlled polarization using a specific laser configuration and loose focusing geometry.

Findings

XUV radiation energy per pulse is ~100 nJ

Spectrum spans from 17 to 26 eV

Method enables ultrafast chiral phenomena investigations

Abstract

In this study the generation of energetic coherent extreme ultraviolet (XUV) radiation with controlled polarization, is reported. The XUV radiation results from the process of high harmonic generation (HHG), in a gas phase atomic medium, driven by an intense two-color circularly polarized counter-rotating laser field, under loose focusing geometry conditions. The energy of the XUV radiation emitted per laser pulse is found to be of the order of ~100 nJ with the spectrum spanning from 17 to 26 eV. The demonstrated energy values along with tight focusing geometries is sufficient to induce nonlinear processes and challenges the perspectives for ultrafast investigations of chiral phenomena in the XUV spectral region.