74970 20200217133054.0 doi 10.1103/PhysRevB.98.041407 sideral 107617 ART-2018-107617 eng (orcid)0000-0001-6575-168X Gutierrez Rodrigo, S. All-optical control of surface plasmons by second-harmonic generation 2018 Access copy available to the general public Unrestricted All-optical control of surface plasmon polaritons (SPPs) is theoretically demonstrated in arrays of metallic slits. It is shown how the mixing of electromagnetic fields scattered by the slits from a weak beam at ¿ wavelength, with second-harmonic fields generated by a high-intensity 2¿ beam, creates a destructive interference of surface plasmons in one of the two possible directions of emission from the slits, while these are enhanced along the opposite direction. Our method enables spectrally broadband excitation and thus unidirectional launching of SPP pulses as short as ~20 fs, all-optically controlled. Based on these findings, an ultranarrow bandwidth surface plasmon frequency comb is designed. info:eu-repo/grantAgreement/ES/MINECO/MAT2017-88358-C3-2-R info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 1.502 2018 Electronic, Optical and Magnetic Materials 2018 Q1 Condensed Matter Physics 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 98, 4 (2018), 041407(R)[5 pp] Phys. Rev. B Physical Review B 2469-9950 1226068 http://zaguan.unizar.es/record/74970/files/texto_completo.pdf Versión publicada 19900 http://zaguan.unizar.es/record/74970/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:74970 articulos driver 2020-02-17-12:43:44 ARTICLE