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XUV yield optimization of two-color high-order harmonic generation in gases

Raab, Ann-Kathrin LU ; Redon, Melvin LU ; Roscam Abbing, Sylvianne ; Fang, Yuman LU ; Guo, Chen LU ; Smorenburg, Peter ; Mauritsson, Johan LU orcid ; Viotti, Anne-Lise LU orcid ; Lhuillier, A LU orcid and Arnold, Cord LU (2024)
Abstract
We perform an experimental two-color high-order harmonic generation study in argon with the fundamental of an ytterbium ultrashort pulse laser and its second harmonic. The intensity of the second harmonic and its phase relative to the fundamental are varied, in a large range compared to earlier works, while keeping the total intensity constant. We extract the optimum values for the relative phase and ratio of the two colors which lead to a maximum yield enhancement for each harmonic order in the extreme ultraviolet spectrum. Within the semi-classical three-step model, the yield maximum can be associated with a flat electron return time vs. return energy distribution. An analysis of different distributions allows to predict the required... (More)
We perform an experimental two-color high-order harmonic generation study in argon with the fundamental of an ytterbium ultrashort pulse laser and its second harmonic. The intensity of the second harmonic and its phase relative to the fundamental are varied, in a large range compared to earlier works, while keeping the total intensity constant. We extract the optimum values for the relative phase and ratio of the two colors which lead to a maximum yield enhancement for each harmonic order in the extreme ultraviolet spectrum. Within the semi-classical three-step model, the yield maximum can be associated with a flat electron return time vs. return energy distribution. An analysis of different distributions allows to predict the required relative two-color phase and ratio for a given harmonic order, total laser intensity, fundamental wavelength, and ionization potential. (Less)
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organization
publishing date
type
Working paper/Preprint
publication status
published
subject
publisher
arXiv.org
external identifiers
  • scopus:85215380028
DOI
10.48550/arXiv.2410.21997
language
English
LU publication?
yes
id
c14271e3-aabf-4515-97a0-b5404aba78dc
date added to LUP
2024-10-31 13:58:01
date last changed
2025-04-23 11:20:03
@misc{c14271e3-aabf-4515-97a0-b5404aba78dc,
  abstract     = {{We perform an experimental two-color high-order harmonic generation study in argon with the fundamental of an ytterbium ultrashort pulse laser and its second harmonic. The intensity of the second harmonic and its phase relative to the fundamental are varied, in a large range compared to earlier works, while keeping the total intensity constant. We extract the optimum values for the relative phase and ratio of the two colors which lead to a maximum yield enhancement for each harmonic order in the extreme ultraviolet spectrum. Within the semi-classical three-step model, the yield maximum can be associated with a flat electron return time vs. return energy distribution. An analysis of different distributions allows to predict the required relative two-color phase and ratio for a given harmonic order, total laser intensity, fundamental wavelength, and ionization potential.}},
  author       = {{Raab, Ann-Kathrin and Redon, Melvin and Roscam Abbing, Sylvianne and Fang, Yuman and Guo, Chen and Smorenburg, Peter and Mauritsson, Johan and Viotti, Anne-Lise and Lhuillier, A and Arnold, Cord}},
  language     = {{eng}},
  month        = {{10}},
  note         = {{Preprint}},
  publisher    = {{arXiv.org}},
  title        = {{XUV yield optimization of two-color high-order harmonic generation in gases}},
  url          = {{http://dx.doi.org/10.48550/arXiv.2410.21997}},
  doi          = {{10.48550/arXiv.2410.21997}},
  year         = {{2024}},
}