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Letter. Spatially resolved soft X-ray spectrometry from single-image diffraction

Praeger, M., de Paula, A.M., Froud, C.A., Rogers, E.T.F., Stebbings, S.L., Brocklesby, W.S., Baumberg, J.J., Hanna, D.C. and Frey, J.G. (2007) Letter. Spatially resolved soft X-ray spectrometry from single-image diffraction Nature Physics, 3, (3), pp. 176-179. (doi:10.1038/nphys516).

Record type: Letter


High-harmonic generation (HHG) offers better coherence1, shorter pulse durations2 and far greater accessibility than synchrotron sources3. These factors make HHG an increasingly important source of soft X-rays and an excellent resource in many emerging areas, for example, the time-resolved study of conformational changes in single biological molecules4. Here, we demonstrate a novel technique that enables us to reconstruct spectral information spatially across an X-ray beam. As only a single diffraction image is required per measurement, this technique is well suited to time-resolved studies. This technique is applicable to many types of X-ray source 3, 5, 6, 7 and can be adapted for different spectral regions. Here, results are obtained using a capillary high-harmonic source8, revealing detailed information that brings new insight into the physical processes occurring inside the source and enabling us to show the first measurement of radial variation of harmonic order in the emission from an HHG capillary.

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e-pub ahead of print date: 4 February 2007
Published date: March 2007
Keywords: pulses, high-harmonic generation, high-order harmonics, phase, coherence
Organisations: Chemistry, Optoelectronics Research Centre, EEE


Local EPrints ID: 46624
ISSN: 1745-2473
PURE UUID: 25f5b765-e3b8-4bdc-ba35-78a9aaecdb3f
ORCID for W.S. Brocklesby: ORCID iD
ORCID for J.G. Frey: ORCID iD

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Date deposited: 09 Jul 2007
Last modified: 16 Oct 2017 16:31

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Author: M. Praeger
Author: A.M. de Paula
Author: C.A. Froud
Author: E.T.F. Rogers
Author: S.L. Stebbings
Author: W.S. Brocklesby ORCID iD
Author: J.J. Baumberg
Author: D.C. Hanna
Author: J.G. Frey ORCID iD

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