High-order parametric generation of coherent XUV radiation

0548574 - FZÚ 2022 RIV US eng J - Journal Article
Hort, Ondřej - Dubrouil, A. - Khokhlova, M. A. - Descamps, D. - Petit, S. - Burgy, F. - Mével, E. - Constant, E. - Strelkov, V. V.
High-order parametric generation of coherent XUV radiation.
Optics Express. Roč. 29, č. 4 (2021), s. 5982-5992. ISSN 1094-4087
R&D Projects: GA MŠMT EE2.3.20.0279; GA MŠMT EF16_019/0000789; GA MŠMT LM2015065; GA MŠMT LQ1606
EU Projects: European Commission(XE) 797688 - CHAMPAGNE
Grant - others:LaserZdroj (OP VK 3)(XE) CZ.1.07/2.3.00/20.0279; OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Research Infrastructure: ELI Beamlines III - 90141
Institutional support: RVO:68378271
Keywords : high-harmonic-generation * laser-pulses * emission * phase * amplification
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impact factor: 3.833, year: 2021
Method of publishing: Open access
https://doi.org/10.1364/OE.418449

Extreme ultraviolet (XUV) radiation finds numerous applications in spectroscopy. When the XUV light is generated via high-order harmonic generation (HHG), it may be produced in the form of attosecond pulses, allowing access to unprecedented ultrafast phenomena. However, the HHG efficiency remains limited. Here we present an observation of a new regime of coherent XUV emission which has a potential to provide higher XUV intensity, vital for applications. We explain the process by high-order parametric generation, involving the combined emission of THz and XUV photons, where the phase matching is very robust against ionization. This introduces a way to use higher-energy driving pulses, thus generating more XUV photons.
Permanent Link: http://hdl.handle.net/11104/0325233