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Tracking attosecond electronic coherences using phase-manipulated extreme ultraviolet pulses

Journal article
Authors Andreas Wituschek
Lukas Bruder
Enrico Allaria
Ulrich Bangert
Marcel Binz
Roberto Borghes
Carlo Callegari
Giulio Cerullo
Paolo Cinquegrana
Luca Giannessi
Miltcho Danailov
Alexander Demidovich
Michele Di Fraia
Marcel Drabbels
Raimund Feifel
Tim Laarmann
Rupert Michiels
Najmeh Sadat Mirian
Marcel Mudrich
Ivaylo Nikolov
Finn H. O’Shea
Giuseppe Penco
Paolo Piseri
Oksana Plekan
Kevin Charles Prince
Andreas Przystawik
Primož Rebernik Ribič
Giuseppe Sansone
Paolo Sigalotti
Simone Spampinati
Carlo Spezzani
Richard J. Squibb
Stefano Stranges
Daniel Uhl
Frank Stienkemeier
Published in Nature Communications
Volume 11
ISSN 2041-1723
Publication year 2020
Published at Department of Physics (GU)
Language en
Links https://www.nature.com/articles/s41...
https://gup.ub.gu.se/file/208052
Subject categories Physical Sciences, Atom and Molecular Physics and Optics

Abstract

The recent development of ultrafast extreme ultraviolet (XUV) coherent light sources bears great potential for a better understanding of the structure and dynamics of matter. Promising routes are advanced coherent control and nonlinear spectroscopy schemes in the XUV energy range, yielding unprecedented spatial and temporal resolution. However, their implementation has been hampered by the experimental challenge of generating XUV pulse sequences with precisely controlled timing and phase properties. In particular, direct control and manipulation of the phase of individual pulses within an XUV pulse sequence opens exciting possibilities for coherent control and multidimensional spectroscopy, but has not been accomplished. Here, we overcome these constraints in a highly time-stabilized and phase-modulated XUV-pump, XUV-probe experiment, which directly probes the evolution and dephasing of an inner subshell electronic coherence. This approach, avoiding any XUV optics for direct pulse manipulation, opens up extensive applications of advanced nonlinear optics and spectroscopy at XUV wavelengths.

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