Journal article
Increasing the brightness of harmonic XUV radiation with spatially-tailored driver beams
- 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 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.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1088/2040-8986/abcc56
Authors
- Publisher:
- IOP Publishing
- Journal:
- Journal of Optics More from this journal
- Volume:
- 23
- Issue:
- 1
- Article number:
- 015502
- Publication date:
- 2020-12-14
- Acceptance date:
- 2020-11-19
- DOI:
- EISSN:
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2040-8986
- ISSN:
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2040-8978
- Language:
-
English
- Keywords:
- Pubs id:
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1151013
- Local pid:
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pubs:1151013
- Deposit date:
-
2020-12-21
Terms of use
- Copyright holder:
- Treacher et al.
- Copyright date:
- 2020
- Rights statement:
- ©2020 The Author(s). Published by IOP Publishing Ltd. Original Content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
- Licence:
- CC Attribution (CC BY)
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