Ultrafast Polarization-Tunable Monochromatic Extreme Ultraviolet Source at High-Repetition-Rate
Optics
2022-07-13 v1
Abstract
We report on the development of a high-order harmonic generation (HHG)-based ultrafast high-repetition-rate (250 kHz) monochromatic extreme ultraviolet (21.6 eV) source with polarization tunability, specifically designed for multi-modal dichroism in time- and angle-resolved photoemission spectroscopy. Driving HHG using an annular beam allows us to spatially separate the high-power 515 nm driving laser from the XUV beamlet while preserving the linear polarization axis angle tunability. This enables controlling the polarization state of the XUV radiation with a fixed all-reflective phase-shifter. This scheme leads to a source brightness of 5.710 photons/s at 21.6 eV (up to 410 photons/s on target) with ellipticities as high as 90.
Keywords
Cite
@article{arxiv.2205.04705,
title = {Ultrafast Polarization-Tunable Monochromatic Extreme Ultraviolet Source at High-Repetition-Rate},
author = {Antoine Comby and Debobrata Rajak and Dominique Descamps and Stéphane Petit and Valérie Blanchet and Yann Mairesse and Jérome Gaudin and Samuel Beaulieu},
journal= {arXiv preprint arXiv:2205.04705},
year = {2022}
}