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Metrology of high-order harmonics for free-electron laser seeding

Erny, Christian LU ; Mansten, Erik LU ; Gisselbrecht, Mathieu LU ; Schwenke, Jörg LU ; Rakowski, Rafal LU ; He, Xinkui LU ; Gaarde, Mette LU ; Werin, Sverker LU and L'Huillier, Anne LU (2011) In New Journal of Physics 13.
Abstract
We examine the characteristics of high-order harmonics generated with 800 nm, 25 mJ, 160 fs laser pulses in an Ar gas cell with the objective of seeding a free electron laser. We measure the energy per pulse and per harmonic, the energy jitter, the divergence and the position stability of the harmonic beam. We perform ab initio numerical simulations based on integration of the time-dependent Schrodinger equation and of the wave equation within the slowly varying envelope approximation. The results reproduce the experimental measurements to better than a factor of two. The interaction of a frequency comb of harmonic fields with an electron bunch in an undulator is examined with a simple model consisting of calculating the energy modulation... (More)
We examine the characteristics of high-order harmonics generated with 800 nm, 25 mJ, 160 fs laser pulses in an Ar gas cell with the objective of seeding a free electron laser. We measure the energy per pulse and per harmonic, the energy jitter, the divergence and the position stability of the harmonic beam. We perform ab initio numerical simulations based on integration of the time-dependent Schrodinger equation and of the wave equation within the slowly varying envelope approximation. The results reproduce the experimental measurements to better than a factor of two. The interaction of a frequency comb of harmonic fields with an electron bunch in an undulator is examined with a simple model consisting of calculating the energy modulation owing to the seed-electron interaction. The model indicates that the undulator acts as a spectral filter selecting a given harmonic. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
New Journal of Physics
volume
13
publisher
IOP Publishing Ltd.
external identifiers
  • wos:000293888800002
  • scopus:80051616148
ISSN
1367-2630
DOI
10.1088/1367-2630/13/7/073035
language
English
LU publication?
yes
id
2d7cd40e-3d9c-4936-829f-80d5fc183b73 (old id 2162828)
date added to LUP
2011-09-20 12:17:40
date last changed
2017-01-01 05:35:22
@article{2d7cd40e-3d9c-4936-829f-80d5fc183b73,
  abstract     = {We examine the characteristics of high-order harmonics generated with 800 nm, 25 mJ, 160 fs laser pulses in an Ar gas cell with the objective of seeding a free electron laser. We measure the energy per pulse and per harmonic, the energy jitter, the divergence and the position stability of the harmonic beam. We perform ab initio numerical simulations based on integration of the time-dependent Schrodinger equation and of the wave equation within the slowly varying envelope approximation. The results reproduce the experimental measurements to better than a factor of two. The interaction of a frequency comb of harmonic fields with an electron bunch in an undulator is examined with a simple model consisting of calculating the energy modulation owing to the seed-electron interaction. The model indicates that the undulator acts as a spectral filter selecting a given harmonic.},
  articleno    = {073035},
  author       = {Erny, Christian and Mansten, Erik and Gisselbrecht, Mathieu and Schwenke, Jörg and Rakowski, Rafal and He, Xinkui and Gaarde, Mette and Werin, Sverker and L'Huillier, Anne},
  issn         = {1367-2630},
  language     = {eng},
  publisher    = {IOP Publishing Ltd.},
  series       = {New Journal of Physics},
  title        = {Metrology of high-order harmonics for free-electron laser seeding},
  url          = {http://dx.doi.org/10.1088/1367-2630/13/7/073035},
  volume       = {13},
  year         = {2011},
}