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Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams

D J Treacher, D T Lloyd, Kevin O'Keeffe Orcid Logo, F Wiegandt, S M Hooker

Journal of Optics, Volume: 23, Issue: 1, Start page: 015502

Swansea University Author: Kevin O'Keeffe Orcid Logo

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DOI (Published version): 10.1088/2040-8986/abcc56

Abstract

Bright high harmonic sources can be produced by loosely focussing high peak power laser pulses to exploit the quadratic scaling of flux with driver spot size at the expense of a larger experimental footprint. Here, we present a method for increasing the brightness of a harmonic source (while maintai...

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Published in: Journal of Optics
ISSN: 2040-8978 2040-8986
Published: IOP Publishing 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa55736
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first_indexed 2020-11-23T13:05:15Z
last_indexed 2021-12-01T04:14:04Z
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spelling 2021-11-30T15:43:31.3863893 v2 55736 2020-11-23 Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams e17dfae9042b113b28e8340ea1572db4 0000-0003-2085-0806 Kevin O'Keeffe Kevin O'Keeffe true false 2020-11-23 SPH Bright high harmonic sources can be produced by loosely focussing high peak power laser pulses to exploit the quadratic scaling of flux with driver spot size at the expense of a larger experimental footprint. Here, we present a method for increasing the brightness of a harmonic source (while maintaining a compact experimental geometry) by spatially shaping the transverse focal intensity distribution of a driving laser from a Gaussian to supergaussian. Using a phase-only spatial light modulator we increase the size and order of the supergaussian focal profiles, thereby increasing the number of harmonic emitters more efficiently than possible with Gaussian beams. This provides the benefits of a loose focussing geometry, yielding a five-fold increase in harmonic brightness, whilst maintaining a constant experimental footprint. This technique can readily be applied to existing high harmonic systems, opening new opportunities for applications requiring bright, compact sources of coherent short wavelength radiation. Journal Article Journal of Optics 23 1 015502 IOP Publishing 2040-8978 2040-8986 high-harmonic generation, frequency conversion, beam shaping 1 1 2021 2021-01-01 10.1088/2040-8986/abcc56 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2021-11-30T15:43:31.3863893 2020-11-23T12:57:11.5661860 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics D J Treacher 1 D T Lloyd 2 Kevin O'Keeffe 0000-0003-2085-0806 3 F Wiegandt 4 S M Hooker 5 55736__19048__4acc73d0412f4d35b5cbbf02311d41ee.pdf 55736.pdf 2021-01-13T11:04:38.2780487 Output 1220734 application/pdf Version of Record true © 2020 The Author(s). Original Content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence true eng https://creativecommons.org/licenses/by/4.0/
title Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
spellingShingle Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
Kevin O'Keeffe
title_short Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
title_full Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
title_fullStr Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
title_full_unstemmed Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
title_sort Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
author_id_str_mv e17dfae9042b113b28e8340ea1572db4
author_id_fullname_str_mv e17dfae9042b113b28e8340ea1572db4_***_Kevin O'Keeffe
author Kevin O'Keeffe
author2 D J Treacher
D T Lloyd
Kevin O'Keeffe
F Wiegandt
S M Hooker
format Journal article
container_title Journal of Optics
container_volume 23
container_issue 1
container_start_page 015502
publishDate 2021
institution Swansea University
issn 2040-8978
2040-8986
doi_str_mv 10.1088/2040-8986/abcc56
publisher IOP Publishing
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
active_str 0
description Bright high harmonic sources can be produced by loosely focussing high peak power laser pulses to exploit the quadratic scaling of flux with driver spot size at the expense of a larger experimental footprint. Here, we present a method for increasing the brightness of a harmonic source (while maintaining a compact experimental geometry) by spatially shaping the transverse focal intensity distribution of a driving laser from a Gaussian to supergaussian. Using a phase-only spatial light modulator we increase the size and order of the supergaussian focal profiles, thereby increasing the number of harmonic emitters more efficiently than possible with Gaussian beams. This provides the benefits of a loose focussing geometry, yielding a five-fold increase in harmonic brightness, whilst maintaining a constant experimental footprint. This technique can readily be applied to existing high harmonic systems, opening new opportunities for applications requiring bright, compact sources of coherent short wavelength radiation.
published_date 2021-01-01T04:10:10Z
_version_ 1763753706978803712
score 11.013082

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