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Impact of oblique reflections on the generation of isolated attosecond pulses by polarization gating

Picot, C. ; Rivas, D. Diaz LU ; Ouahioune, N. LU orcid ; Hoff, D. LU ; Perez, L. ; Skupin, S. ; Raab, A. K. LU ; Guo, C. LU ; Maroju, P. Kumar LU and L'Huillier, A. LU orcid , et al. (2025) In Optics Letters 50(21). p.6738-6741
Abstract

Isolated attosecond pulses are often generated via sub-optical-cycle polarization gating. This technique, based on the precise control of the time-dependent polarization of the infrared driver pulse, enables strong temporal confinement of the extreme ultraviolet (XUV) emission from high-order harmonic generation (HHG) in gases. In this work, we study the influence of pulse propagation between the position where the polarization gate is created and the nonlinear HHG medium on the generation of isolated attosecond pulses. Oblique reflections on mirrors, in particular, lead to a significant polarization-dependent carrier phase shift and group delay. In our experiments, seven reflections of the few-cycle infrared driver pulse on metallic... (More)

Isolated attosecond pulses are often generated via sub-optical-cycle polarization gating. This technique, based on the precise control of the time-dependent polarization of the infrared driver pulse, enables strong temporal confinement of the extreme ultraviolet (XUV) emission from high-order harmonic generation (HHG) in gases. In this work, we study the influence of pulse propagation between the position where the polarization gate is created and the nonlinear HHG medium on the generation of isolated attosecond pulses. Oblique reflections on mirrors, in particular, lead to a significant polarization-dependent carrier phase shift and group delay. In our experiments, seven reflections of the few-cycle infrared driver pulse on metallic mirrors at 45° lead to a delay of 2.8 fs, which is large enough to destroy the polarization gate. When these effects are precompensated, efficient XUV confinement via sub-cycle polarization gating is evidenced by continuous XUV spectra which strongly depend on the carrier-envelope phase (CEP).

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
50
issue
21
pages
4 pages
publisher
Optical Society of America
external identifiers
  • pmid:41185239
  • scopus:105020772234
ISSN
1539-4794
DOI
10.1364/OL.572691
language
English
LU publication?
yes
id
4b0175d3-beb1-4ca2-8899-d6bb5fcee964
date added to LUP
2025-12-01 11:32:58
date last changed
2025-12-15 13:03:10
@article{4b0175d3-beb1-4ca2-8899-d6bb5fcee964,
  abstract     = {{<p>Isolated attosecond pulses are often generated via sub-optical-cycle polarization gating. This technique, based on the precise control of the time-dependent polarization of the infrared driver pulse, enables strong temporal confinement of the extreme ultraviolet (XUV) emission from high-order harmonic generation (HHG) in gases. In this work, we study the influence of pulse propagation between the position where the polarization gate is created and the nonlinear HHG medium on the generation of isolated attosecond pulses. Oblique reflections on mirrors, in particular, lead to a significant polarization-dependent carrier phase shift and group delay. In our experiments, seven reflections of the few-cycle infrared driver pulse on metallic mirrors at 45° lead to a delay of 2.8 fs, which is large enough to destroy the polarization gate. When these effects are precompensated, efficient XUV confinement via sub-cycle polarization gating is evidenced by continuous XUV spectra which strongly depend on the carrier-envelope phase (CEP).</p>}},
  author       = {{Picot, C. and Rivas, D. Diaz and Ouahioune, N. and Hoff, D. and Perez, L. and Skupin, S. and Raab, A. K. and Guo, C. and Maroju, P. Kumar and L'Huillier, A. and Viotti, A. L. and Arnold, C. L. and Gisselbrecht, M. and Constant, E.}},
  issn         = {{1539-4794}},
  language     = {{eng}},
  month        = {{11}},
  number       = {{21}},
  pages        = {{6738--6741}},
  publisher    = {{Optical Society of America}},
  series       = {{Optics Letters}},
  title        = {{Impact of oblique reflections on the generation of isolated attosecond pulses by polarization gating}},
  url          = {{http://dx.doi.org/10.1364/OL.572691}},
  doi          = {{10.1364/OL.572691}},
  volume       = {{50}},
  year         = {{2025}},
}