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Effect of plasma-core-induced self-guiding on phase matching of high-order harmonic generation in gases

Major, Balázs; Kovács, Katalin; Tosa, Valer; Rudawski, Piotr LU ; L'Huillier, Anne LU and Varjú, Katalin LU (2019) In Journal of the Optical Society of America B: Optical Physics 36(6). p.1594-1601
Abstract

In this work, we numerically study a self-guiding process in which ionization plays a dominant role and analyze its effect on high-order harmonic generation (HHG) in gases. Although this type of self-guiding-termed "plasmacore- induced self-guiding" in previous works-limits the achievable cutoff by regulating the intensity of the laser beam, it provides favorable conditions for phase matching, which is indispensable for high-flux-gas highharmonic sources. To underline the role of self-guiding in efficient HHG, we investigate the time-dependent phase-matching conditions in the guided beam and show how the spatiotemporally constant fundamental intensity contributes to the constructive buildup of the harmonic field in a broad photon energy... (More)

In this work, we numerically study a self-guiding process in which ionization plays a dominant role and analyze its effect on high-order harmonic generation (HHG) in gases. Although this type of self-guiding-termed "plasmacore- induced self-guiding" in previous works-limits the achievable cutoff by regulating the intensity of the laser beam, it provides favorable conditions for phase matching, which is indispensable for high-flux-gas highharmonic sources. To underline the role of self-guiding in efficient HHG, we investigate the time-dependent phase-matching conditions in the guided beam and show how the spatiotemporally constant fundamental intensity contributes to the constructive buildup of the harmonic field in a broad photon energy range up to the provided cutoff.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of the Optical Society of America B: Optical Physics
volume
36
issue
6
pages
8 pages
publisher
Optical Society of America
external identifiers
  • scopus:85069581501
ISSN
0740-3224
DOI
10.1364/JOSAB.36.001594
language
English
LU publication?
yes
id
dc16565b-a255-405d-97bf-01a9bb0279c7
date added to LUP
2019-08-09 15:54:25
date last changed
2019-10-08 03:56:49
@article{dc16565b-a255-405d-97bf-01a9bb0279c7,
  abstract     = {<p>In this work, we numerically study a self-guiding process in which ionization plays a dominant role and analyze its effect on high-order harmonic generation (HHG) in gases. Although this type of self-guiding-termed "plasmacore- induced self-guiding" in previous works-limits the achievable cutoff by regulating the intensity of the laser beam, it provides favorable conditions for phase matching, which is indispensable for high-flux-gas highharmonic sources. To underline the role of self-guiding in efficient HHG, we investigate the time-dependent phase-matching conditions in the guided beam and show how the spatiotemporally constant fundamental intensity contributes to the constructive buildup of the harmonic field in a broad photon energy range up to the provided cutoff.</p>},
  author       = {Major, Balázs and Kovács, Katalin and Tosa, Valer and Rudawski, Piotr and L'Huillier, Anne and Varjú, Katalin},
  issn         = {0740-3224},
  language     = {eng},
  number       = {6},
  pages        = {1594--1601},
  publisher    = {Optical Society of America},
  series       = {Journal of the Optical Society of America B: Optical Physics},
  title        = {Effect of plasma-core-induced self-guiding on phase matching of high-order harmonic generation in gases},
  url          = {http://dx.doi.org/10.1364/JOSAB.36.001594},
  volume       = {36},
  year         = {2019},
}