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research article
Lateral shearing interferometry of high-harmonic wavefronts
2011
We present a technique for frequency-resolved wavefront characterization of high harmonics based on lateral shearing interferometry. Tilted replicas of the driving laser pulse are produced by a Mach-Zehnder interferometer, producing separate focii in the target. The interference of the resulting harmonics on a flat-field extreme ultraviolet spectrometer yields the spatial phase derivative. A comprehensive set of spatial profiles, resolved by harmonic order, validate the technique and reveal the interplay of single-atom and macroscopic effects. © 2011 Optical Society of America.
Type
research article
Authors
Austin, Dane R.
•
Witting, Tobias
•
•
Frank, Felix
•
Wyatt, Adam S.
•
Marangos, Jon P.
•
Tisch, John W.G.
•
Walmsley, Ian A.
Publication date
2011
Published in
Volume
36
Issue
10
Article Number
1746
Peer reviewed
NON-REVIEWED
EPFL units
Available on Infoscience
October 29, 2014
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