Nanoscale X-ray source by high harmonic generation in a capillary
Nanoscale X-ray source by high harmonic generation in a capillary
Short pulse X-ray radiation at nanometer wavelength provides a nanoscale source for a wide range of applications in nanoscience and technology. We demonstrate the generation of coherent ultrafast soft X-rays by high harmonic generation in a capillary filled with argon gas. Harmonics up to the 29th order, at wavelengths down to 25nm, are obtained. The enhancement of particular harmonic intensities and tuning of wavelength position is achieved by controlling the argon ionization level either by changing the average intensity of the laser pulse or by varying the chirp of the laser pulse. We observe an ionization dependent blue shift of the fundamental wavelength that is directly imprinted on the harmonic wavelengths. We now aim to focus the x-ray beam with a tapered fibre to obtain a nanometer size spot for nanoscale imaging of small objects and to directly observe dynamics with simultaneously high temporal and spatial resolution.
1-26
Praeger, M.
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de Paula, A.M.
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Baumberg, J.J.
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Froud, C.A.
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Rogers, E.T.F.
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Hanna, D.C.
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Brocklesby, W.S.
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Frey, J.G.
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2005
Praeger, M.
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de Paula, A.M.
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Baumberg, J.J.
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Froud, C.A.
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Rogers, E.T.F.
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Hanna, D.C.
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Brocklesby, W.S.
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Frey, J.G.
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Praeger, M., de Paula, A.M., Baumberg, J.J., Froud, C.A., Rogers, E.T.F., Hanna, D.C., Brocklesby, W.S. and Frey, J.G.
(2005)
Nanoscale X-ray source by high harmonic generation in a capillary.
Micro and Nanotechnology 2005 (MNT 05) International Conference, London, UK.
12 - 14 Dec 2005.
.
Record type:
Conference or Workshop Item
(Other)
Abstract
Short pulse X-ray radiation at nanometer wavelength provides a nanoscale source for a wide range of applications in nanoscience and technology. We demonstrate the generation of coherent ultrafast soft X-rays by high harmonic generation in a capillary filled with argon gas. Harmonics up to the 29th order, at wavelengths down to 25nm, are obtained. The enhancement of particular harmonic intensities and tuning of wavelength position is achieved by controlling the argon ionization level either by changing the average intensity of the laser pulse or by varying the chirp of the laser pulse. We observe an ionization dependent blue shift of the fundamental wavelength that is directly imprinted on the harmonic wavelengths. We now aim to focus the x-ray beam with a tapered fibre to obtain a nanometer size spot for nanoscale imaging of small objects and to directly observe dynamics with simultaneously high temporal and spatial resolution.
Text
depaula-mnt05.pdf
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More information
Published date: 2005
Additional Information:
Powerpoint presentation
Venue - Dates:
Micro and Nanotechnology 2005 (MNT 05) International Conference, London, UK, 2005-12-12 - 2005-12-14
Identifiers
Local EPrints ID: 20982
URI: http://eprints.soton.ac.uk/id/eprint/20982
PURE UUID: 599be561-e0e2-44ea-af20-8221a30df71d
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Date deposited: 09 Mar 2006
Last modified: 16 Mar 2024 03:59
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Contributors
Author:
A.M. de Paula
Author:
J.J. Baumberg
Author:
C.A. Froud
Author:
E.T.F. Rogers
Author:
D.C. Hanna
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