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RESEARCH PRODUCT
Delocalization of Nonlinear Optical Responses in Plasmonic Nanoantennas
Olivier DemichelAlexandre BouhelierSviatlana ViarbitskayaGérard Colas Des FrancsBenoit Cluzelsubject
Physicsbusiness.industrySurface plasmonFOS: Physical sciencesPhysics::OpticsGeneral Physics and Astronomy02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesNonlinear systemDelocalized electronOptics0103 physical sciencesFemtosecondOptoelectronics010306 general physics0210 nano-technologybusinessLuminescencePlasmonExcitationPhysics - OpticsOptics (physics.optics)Coherence (physics)description
Remote excitation and emission of two-photon luminescence and second-harmonic generation are observed in micrometer long gold rod optical antennas upon local illumination with a tightly focused near-infrared femtosecond laser beam. We show that the nonlinear radiations can be emitted from the entire antenna and the measured far-field angular patterns bear the information regarding the nature and origins of the respective nonlinear processes. We demonstrate that the nonlinear responses are transported by the propagating surface plasmon at excitation frequency, enabling thereby polariton-mediated tailoring and design of nonlinear responses.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-03-25 | Physical Review Letters |