Gas jet structure influence on high harmonic generation
Gas jet structure influence on high harmonic generation
Gas jets used as sources for high harmonic generation (HHG) have a complex three-dimensional density and velocity profile. This paper describes how the profile influences the generation of extreme-UV light. As the position of the laser focus is varied along the jet flow axis, we show that the intensity of the output radiation varies by approximately three times, with the highest flux being observed when the laser is focused into the Mach disc. The work demonstrated here will aid in the optimization of HHG flux from gas jet sources. The flux increase is attributed to a density increase within the structure of the jet, which is confirmed by simultaneous imaging of atom and ion fluorescence from the jet.
9801-9806
Grant-Jacob, James
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Mills, Benjamin
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Butcher, Thomas J.
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Chapman, Richard T.
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Brocklesby, William S.
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Frey, Jeremy G.
ba60c559-c4af-44f1-87e6-ce69819bf23f
2011
Grant-Jacob, James
c5d144d8-3c43-4195-8e80-edd96bfda91b
Mills, Benjamin
05f1886e-96ef-420f-b856-4115f4ab36d0
Butcher, Thomas J.
77bed03c-ae8f-4e12-8c35-974150a7cc2d
Chapman, Richard T.
8a9fe0e2-c408-4188-bf10-e93bf247205c
Brocklesby, William S.
c53ca2f6-db65-4e19-ad00-eebeb2e6de67
Frey, Jeremy G.
ba60c559-c4af-44f1-87e6-ce69819bf23f
Grant-Jacob, James, Mills, Benjamin, Butcher, Thomas J., Chapman, Richard T., Brocklesby, William S. and Frey, Jeremy G.
(2011)
Gas jet structure influence on high harmonic generation.
Optics Express, 19 (10), .
(doi:10.1364/OE.19.009801).
Abstract
Gas jets used as sources for high harmonic generation (HHG) have a complex three-dimensional density and velocity profile. This paper describes how the profile influences the generation of extreme-UV light. As the position of the laser focus is varied along the jet flow axis, we show that the intensity of the output radiation varies by approximately three times, with the highest flux being observed when the laser is focused into the Mach disc. The work demonstrated here will aid in the optimization of HHG flux from gas jet sources. The flux increase is attributed to a density increase within the structure of the jet, which is confirmed by simultaneous imaging of atom and ion fluorescence from the jet.
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oe-19-10-9801.pdf
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Published date: 2011
Organisations:
Chemistry, Optoelectronics Research Centre, Quantum, Light & Matter Group
Identifiers
Local EPrints ID: 184629
URI: http://eprints.soton.ac.uk/id/eprint/184629
ISSN: 1094-4087
PURE UUID: fd7d0282-ae35-4251-8c3b-904b106df461
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Date deposited: 06 May 2011 09:21
Last modified: 15 Mar 2024 03:37
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Author:
Thomas J. Butcher
Author:
Richard T. Chapman
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