2026-04-14T04:25:05Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/899312026-01-30T07:39:34Zcom_2072_1033col_2072_452950

Intrapulse x-ray parametric amplification in high-order-harmonic generation Serrat Jurado, Carles Universitat Politècnica de Catalunya. Departament de Física Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers Àrees temàtiques de la UPC::Física Laser pulses, Ultrashort Attosecond light-pulses Extreme-ultraviolet Laser fields Emission Làsers d'impulsos ultracurts Harmònics (Ones elèctriques) We demonstrate strong-field-driven impulsive XUV-x-ray parametric amplification (IXPA) processes in high-order harmonic generation at the single-atom level by using ab initio calculations. We consider the example of Li+ ions exposed simultaneously to an intense IR pulse and a weak 200-as XUV-x-ray pulse with central photon energies varying from 90 to 400 eV. We determine optimal parameter ranges and the precise delays between the IR and the XUV-x-ray pulses for IXPA to occur. The present results might be a guide to achieve exponential growth of the XUV-x-ray signal in tabletop XUV-x-ray lasers. Peer Reviewed Postprint (author's final draft) 2016-06-17 Article Serrat, C. Intrapulse x-ray parametric amplification in high-order-harmonic generation. "Physical review A", 17 Juny 2016, vol. 93, núm. 6, p. 063415-1-063415-4. 1050-2947 https://hdl.handle.net/2117/89931 10.1103/PhysRevA.93.063415 eng http://journals.aps.org/pra/abstract/10.1103/PhysRevA.93.063415 info:eu-repo/grantAgreement/MINECO//FIS2014-51997-R/ES/AMPLIFICACION DE PULSOS DE RAYOS X DE ATTOSEGUNDOS Y CONTROL DE PROCESOS QUIMICOS/ Open Access application/pdf