All-Optically Reconfigurable Plasmonic Metagrating for Ultrafast Diffraction Management

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dc.citation.firstpage1345en_US
dc.citation.issueNumber3en_US
dc.citation.journalTitleNano Lettersen_US
dc.citation.lastpage1351en_US
dc.citation.volumeNumber21en_US
dc.contributor.authorSchirato, Andreaen_US
dc.contributor.authorMazzanti, Andreaen_US
dc.contributor.authorProietti Zaccaria, Remoen_US
dc.contributor.authorNordlander, Peteren_US
dc.contributor.authorAlabastri, Alessandroen_US
dc.contributor.authorDella Valle, Giuseppeen_US
dc.contributor.orgLaboratory for Nanophotonicsen_US
dc.date.accessioned2021-03-09T15:44:33Zen_US
dc.date.available2021-03-09T15:44:33Zen_US
dc.date.issued2021en_US
dc.description.abstractHot-electron dynamics taking place in nanostructured materials upon irradiation with fs-laser pulses has been the subject of intensive research, leading to the emerging field of ultrafast nanophotonics. However, the most common description of nonlinear interaction with ultrashort laser pulses assumes a homogeneous spatial distribution for the photogenerated carriers. Here we theoretically show that the inhomogeneous evolution of the hot carriers at the nanoscale can disclose unprecedented opportunities for ultrafast diffraction management. In particular, we design a highly symmetric plasmonic metagrating capable of a transient symmetry breaking driven by hot electrons. The subsequent power imbalance between symmetrical diffraction orders is calculated to exceed 20% under moderate (∼2 mJ/cm2) laser fluence. Our theoretical investigation also indicates that the recovery time of the symmetric configuration can be controlled by tuning the geometry of the metaatom, and can be as fast as 2 ps for electrically connected configurations.en_US
dc.identifier.citationSchirato, Andrea, Mazzanti, Andrea, Proietti Zaccaria, Remo, et al.. "All-Optically Reconfigurable Plasmonic Metagrating for Ultrafast Diffraction Management." <i>Nano Letters,</i> 21, no. 3 (2021) American Chemical Society: 1345-1351. https://doi.org/10.1021/acs.nanolett.0c04075.en_US
dc.identifier.digitalacs-nanolett-0c04075en_US
dc.identifier.doihttps://doi.org/10.1021/acs.nanolett.0c04075en_US
dc.identifier.urihttps://hdl.handle.net/1911/110156en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsThis is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleAll-Optically Reconfigurable Plasmonic Metagrating for Ultrafast Diffraction Managementen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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