Femtosecond Polarization Shaping of Free-Electron Laser Pulses.

Autor: Perosa G; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy.; Department of Physics, Università degli Studi di Trieste, 34127 Trieste, Italy., Wätzel J; Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany., Garzella D; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Allaria E; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Bonanomi M; Politecnico di Milano, 20133 Milano, Italy.; Istituto di Fotonica e Nanotecnologie, 20133 Milano, Italy., Danailov MB; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Brynes A; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Callegari C; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., De Ninno G; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy.; Laboratory of Quantum Optics, University of Nova Gorica, 5001 Nova Gorica, Slovenia., Demidovich A; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Di Fraia M; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy.; Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Basovizza, Italy., Di Mitri S; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy.; Department of Physics, Università degli Studi di Trieste, 34127 Trieste, Italy., Giannessi L; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy.; ENEA C.R. Frascati, 00044 Frascati (Roma), Italy., Manfredda M; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Novinec L; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Pal N; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Penco G; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Plekan O; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Prince KC; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Simoncig A; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Spampinati S; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Spezzani C; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy., Zangrando M; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy.; Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Basovizza, Italy., Berakdar J; Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany., Feifel R; Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden., Squibb RJ; Department of Physics, University of Gothenburg, 41133 Gothenburg, Sweden., Coffee R; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Hemsing E; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA., Roussel E; Université de Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers Atomes et Molécules, F-59000 Lille, France., Sansone G; Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, 79104 Freiburg, Germany., McNeil BWJ; University of Strathclyde (SUPA), Glasgow G4 0NG, United Kingdom.; Cockcroft Institute, Warrington WA4 4AD, United Kingdom.; ASTeC, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom., Ribič PR; Elettra-Sincrotrone Trieste, 34149 Basovizza, Trieste, Italy.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2023 Jul 28; Vol. 131 (4), pp. 045001.
DOI: 10.1103/PhysRevLett.131.045001
Abstrakt: We demonstrate the generation of extreme-ultraviolet (XUV) free-electron laser (FEL) pulses with time-dependent polarization. To achieve polarization modulation on a femtosecond timescale, we combine two mutually delayed counterrotating circularly polarized subpulses from two cross-polarized undulators. The polarization profile of the pulses is probed by angle-resolved photoemission and above-threshold ionization of helium; the results agree with solutions of the time-dependent Schrödinger equation. The stability limit of the scheme is mainly set by electron-beam energy fluctuations, however, at a level that will not compromise experiments in the XUV. Our results demonstrate the potential to improve the resolution and element selectivity of methods based on polarization shaping and may lead to the development of new coherent control schemes for probing and manipulating core electrons in matter.
Databáze: MEDLINE