Molecular variation of capillary-produced soft x-ray high harmonics
Molecular variation of capillary-produced soft x-ray high harmonics
The production of coherent soft x-rays via high harmonic generation (HHG) from Ar, N2 and N2O in a gas-filled capillary waveguide is reported. Odd harmonics of the driving laser intensity are observed as a function of gas pressure up to energies of 50 eV. By employing a simple phase matching theory that incorporates the spatial and temporal dependences of ionization within the waveguide, good agreement with the HHG spectral envelope has been obtained, indicating phase matching is the dominant factor in shaping the spectral envelope of the harmonics.
145602
Stebbings, S.L.
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Rogers, E.T.F.
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de Paula, A.M.
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Praeger, M.
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Froud, C.A.
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Mills, B.
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Hanna, D.C.
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Baumberg, J.J.
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Brocklesby, W.S.
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Frey, J.G.
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4 July 2008
Stebbings, S.L.
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Rogers, E.T.F.
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de Paula, A.M.
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Praeger, M.
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Froud, C.A.
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Mills, B.
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Hanna, D.C.
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Baumberg, J.J.
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Brocklesby, W.S.
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Frey, J.G.
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Stebbings, S.L., Rogers, E.T.F., de Paula, A.M., Praeger, M., Froud, C.A., Mills, B., Hanna, D.C., Baumberg, J.J., Brocklesby, W.S. and Frey, J.G.
(2008)
Molecular variation of capillary-produced soft x-ray high harmonics.
Journal of Physics B: Atomic and Molecular Physics, 41 (14), .
(doi:10.1088/0953-4075/41/14/145602).
Abstract
The production of coherent soft x-rays via high harmonic generation (HHG) from Ar, N2 and N2O in a gas-filled capillary waveguide is reported. Odd harmonics of the driving laser intensity are observed as a function of gas pressure up to energies of 50 eV. By employing a simple phase matching theory that incorporates the spatial and temporal dependences of ionization within the waveguide, good agreement with the HHG spectral envelope has been obtained, indicating phase matching is the dominant factor in shaping the spectral envelope of the harmonics.
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Published date: 4 July 2008
Organisations:
Chemistry, Optoelectronics Research Centre, Physics & Astronomy
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Local EPrints ID: 163397
URI: http://eprints.soton.ac.uk/id/eprint/163397
ISSN: 0953-4075
PURE UUID: f935a72f-80c8-4fcb-a17e-71733fa24fad
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Date deposited: 08 Sep 2010 12:59
Last modified: 14 Mar 2024 02:54
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Author:
S.L. Stebbings
Author:
E.T.F. Rogers
Author:
A.M. de Paula
Author:
C.A. Froud
Author:
D.C. Hanna
Author:
J.J. Baumberg
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