Extreme Ultraviolet Beam Enhancement by Relativistic Surface Plasmons
Cantono, G. LU
; Fedeli, L.
; Sgattoni, A.
; Denoeud, A.
; Chopineau, L.
; Réau, F.
; Ceccotti, T.
and Macchi, A.
(2018)
In Physical Review Letters
120(26).
- Abstract
The emission of high-order harmonics in the extreme ultraviolet range from the interaction of a short, intense laser pulse with a grating target is investigated experimentally. When resonantly exciting a surface plasmon, both the intensity and the highest order observed for the harmonic emission along the grating surface increase with respect to a flat target. Harmonics are obtained when a suitable density gradient is preformed at the target surface, demonstrating the possibility to manipulate the grating profile on a nanometric scale without preventing the surface plasmon excitation. In support of this, the harmonic emission is spatiotemporally correlated to the acceleration of multi-MeV electron bunches along the grating surface.... (More)
The emission of high-order harmonics in the extreme ultraviolet range from the interaction of a short, intense laser pulse with a grating target is investigated experimentally. When resonantly exciting a surface plasmon, both the intensity and the highest order observed for the harmonic emission along the grating surface increase with respect to a flat target. Harmonics are obtained when a suitable density gradient is preformed at the target surface, demonstrating the possibility to manipulate the grating profile on a nanometric scale without preventing the surface plasmon excitation. In support of this, the harmonic emission is spatiotemporally correlated to the acceleration of multi-MeV electron bunches along the grating surface. Particle-in-cell simulations reproduce the experimental results and give insight on the mechanism of high harmonic generation in the presence of surface plasmons.
(Less)
- author
- Cantono, G.
LU
; Fedeli, L.
; Sgattoni, A.
; Denoeud, A.
; Chopineau, L.
; Réau, F.
; Ceccotti, T.
and Macchi, A.
- publishing date
- 2018-06-28
- type
- Contribution to journal
- publication status
- published
- in
- Physical Review Letters
- volume
- 120
- issue
- 26
- article number
- 264803
- publisher
- American Physical Society
- external identifiers
-
- scopus:85049373731
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.120.264803
- language
- English
- LU publication?
- no
- id
- 5bd743e3-da6c-40be-a2f7-b03c2dda20b0
- date added to LUP
- 2019-05-16 14:34:41
- date last changed
- 2025-10-14 11:59:45
@article{5bd743e3-da6c-40be-a2f7-b03c2dda20b0,
abstract = {{<p>The emission of high-order harmonics in the extreme ultraviolet range from the interaction of a short, intense laser pulse with a grating target is investigated experimentally. When resonantly exciting a surface plasmon, both the intensity and the highest order observed for the harmonic emission along the grating surface increase with respect to a flat target. Harmonics are obtained when a suitable density gradient is preformed at the target surface, demonstrating the possibility to manipulate the grating profile on a nanometric scale without preventing the surface plasmon excitation. In support of this, the harmonic emission is spatiotemporally correlated to the acceleration of multi-MeV electron bunches along the grating surface. Particle-in-cell simulations reproduce the experimental results and give insight on the mechanism of high harmonic generation in the presence of surface plasmons.</p>}},
author = {{Cantono, G. and Fedeli, L. and Sgattoni, A. and Denoeud, A. and Chopineau, L. and Réau, F. and Ceccotti, T. and Macchi, A.}},
issn = {{0031-9007}},
language = {{eng}},
month = {{06}},
number = {{26}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Extreme Ultraviolet Beam Enhancement by Relativistic Surface Plasmons}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.120.264803}},
doi = {{10.1103/PhysRevLett.120.264803}},
volume = {{120}},
year = {{2018}},
}