2026-04-17T05:27:48Zhttps://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 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 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