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Opt Lett. 2011 May 15;36(10):1746-8. doi: 10.1364/OL.36.001746.

Lateral shearing interferometry of high-harmonic wavefronts.

Author information

1
Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU, UK. dane.austin@icfo.es

Abstract

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.

PMID:
21593877
DOI:
10.1364/OL.36.001746

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