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Spatial Aberrations in High-Order Harmonic Generation

Plach, Marius LU ; Vismarra, Federico ; Appi, Elisa LU ; Poulain, Vénus LU orcid ; Peschel, Jasper LU ; Smorenburg, Peter ; O’Dwyer, David P. ; Edward, Stephen ; Tao, Yin and Borrego-Varillas, Rocío , et al. (2024) In Ultrafast Science 4.
Abstract

We investigate the spatial characteristics of high-order harmonic radiation generated in argon and observe cross-like patterns in the far field. An analytical model describing harmonics from an astigmatic driving beam reveals that these patterns result from the order and generation position-dependent divergence of harmonics. Even small amounts of driving field astigmatism may result in cross-like patterns, coming from the superposition of individual harmonics with spatial profiles elongated in different directions. By correcting the aberrations using a deformable mirror, we show that fine-tuning the driving wavefront is essential for optimal spatial quality of the harmonics.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ultrafast Science
volume
4
article number
0054
publisher
American Association for the Advancement of Science (AAAS)
external identifiers
  • scopus:85186108851
ISSN
2097-0331
DOI
10.34133/ultrafastscience.0054
language
English
LU publication?
yes
id
fa1289a4-a293-4ac1-befc-62a558823f31
date added to LUP
2024-03-18 14:49:36
date last changed
2024-03-18 14:49:44
@article{fa1289a4-a293-4ac1-befc-62a558823f31,
  abstract     = {{<p>We investigate the spatial characteristics of high-order harmonic radiation generated in argon and observe cross-like patterns in the far field. An analytical model describing harmonics from an astigmatic driving beam reveals that these patterns result from the order and generation position-dependent divergence of harmonics. Even small amounts of driving field astigmatism may result in cross-like patterns, coming from the superposition of individual harmonics with spatial profiles elongated in different directions. By correcting the aberrations using a deformable mirror, we show that fine-tuning the driving wavefront is essential for optimal spatial quality of the harmonics.</p>}},
  author       = {{Plach, Marius and Vismarra, Federico and Appi, Elisa and Poulain, Vénus and Peschel, Jasper and Smorenburg, Peter and O’Dwyer, David P. and Edward, Stephen and Tao, Yin and Borrego-Varillas, Rocío and Nisoli, Mauro and Arnold, Cord L. and L’Huillier, Anne and Eng-Johnsson, Per}},
  issn         = {{2097-0331}},
  language     = {{eng}},
  publisher    = {{American Association for the Advancement of Science (AAAS)}},
  series       = {{Ultrafast Science}},
  title        = {{Spatial Aberrations in High-Order Harmonic Generation}},
  url          = {{http://dx.doi.org/10.34133/ultrafastscience.0054}},
  doi          = {{10.34133/ultrafastscience.0054}},
  volume       = {{4}},
  year         = {{2024}},
}