Real-Space Mapping of Fano Interference in Plasmonic Metamolecules

An unprecedented control of the spectral response of plasmonic nanoantennas has recently been achieved by designing structures that exhibit Fano resonances. This new insight is paving the way for a variety of applications, such as biochemical sensing and surface-enhanced Raman spectroscopy. Here we...

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Detalles Bibliográficos
Autores: Alonso Gonzalez, Pablo, Schnell, Martin, Sarriugarte, Paulo, Sobhani, Heidar, Wu, Chihhui, Arju, Nihal, Khanikaev, Alexander, Golmar, Federico, Albella, Pablo, Arzubiaga, Libe, Casanova, Felix, Hueso, Luis E., Nordlander, Peter, Shvets, Gennady, Hillenbrand, Rainer
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/188769
Acceso en línea:http://hdl.handle.net/11336/188769
Access Level:acceso abierto
Palabra clave:FANO RESONANCE
METAMATERIALS
NEAR-FIELD COUPLING
NEAR-FIELD SPECTROSCOPY
PLASMON
SCANNING NEAR-FIELD OPTICAL MICROSCOPY
https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
Descripción
Sumario:An unprecedented control of the spectral response of plasmonic nanoantennas has recently been achieved by designing structures that exhibit Fano resonances. This new insight is paving the way for a variety of applications, such as biochemical sensing and surface-enhanced Raman spectroscopy. Here we use scattering-type near-field optical microscopy to map the spatial field distribution of Fano modes in infrared plasmonic systems. We observe in real space the interference of narrow (dark) and broad (bright) plasmonic resonances, yielding intensity and phase toggling between different portions of the plasmonic metamolecules when either their geometric sizes or the illumination wavelength is varied.

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