Extreme Ultraviolet Beam Enhancement by Relativistic Surface Plasmons
(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.
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- 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
- 2023-02-28 15:44:49
@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}}, }