Relativistic surface plasmon enhanced harmonic generation from gratings

Year: 2017

Authors: Fedeli L., Sgattoni A., Cantono G., Macchi A.,

Autors Affiliation: Politecn Milan, Dept Energy, I-20133 Milan, Italy; Natl Res Council CNR INO, Natl Opt Inst, A Gozzini Unit, I-56124 Pisa, Italy; Univ Pisa, Enrico Fermi Dept Phys, I-56127 Pisa, Italy; LULI UPMC Sorbonne Univ, CNRS, Ecole Polytech, CEA, F-75013 Paris, France; UPMC Sorbonne Univ, CNRS, Observ Paris, LESIA, F-92195 Meudon, France; Univ Paris Saclay, CEA Saclay, CEA, LIDYL,CNRS, F-91191 Gif Sur Yvette, France; Univ Paris 11, F-91400 Orsay, France.

Abstract: The role of relativistic surface plasmons (SPs) in high order harmonic emission from laser-irradiated grating targets has been investigated by means of particle-in-cell simulations. SP excitation drives a strong enhancement of the intensity of harmonics, particularly in the direction close to the surface tangent. The SP-driven enhancement overlaps with the angular separation of harmonics generated by the grating, which is beneficial for applications requiring monochromatic extreme ultraviolet (XUV) pulses.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 110 (5)      Pages from: 51103-1  to: 51103-5

More Information: We acknowledge ISCRA for the access to the Intel cluster Galileo, based in Italy at CINECA, via the project LaCoSA. We gratefully acknowledge computational support from HPC Cluster CNAF (Bologna, Italy), and we wish to thank the HPC team for their assistance. The author L. Fedeli has been partially supported by European Research Council Consolidator Grant ENSURE (ERC-2014-CoG No. 647554).
KeyWords: Extreme-ultraviolet Light; High-order Harmonics; Intense Laser; Pulses; Mirrors; Driven; Energy; Field; Nanostructures; Reflection
DOI: 10.1063/1.4975365

Citations: 20
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