English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/48395
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Phase-resolved mapping of the near-field vector and polarization state in nanoscale antenna gaps

AutorSchnell, Martin; García-Etxarri, Aitzol ; Alkorta, J.; Aizpurua, Javier ; Hillenbrand, Rainer
Palabras claveVector near-field mapping
Near-field polarization state
Phase-resolved near-field microscopy
Infrared antennas
Bowtie aperture
Local field enhancement
Fecha de publicación2010
EditorAmerican Chemical Society
CitaciónNano Letters 10(9): 3524–3528 (2010)
ResumenWe demonstrate that the local near-field vector and polarization state on planar antenna structures and in nanoscale antenna gaps can be determined by scattering-type near-field optical microscopy (s-SNOM). The near-field vector is reconstructed from the amplitude and phase images of the in- and out-of-plane near-field components obtained by polarization-resolved interferometric detection. Experiments with a mid-infrared inverse bowtie antenna yield a vectorial near-field distribution with unprecedented resolution of about 10 nm and in excellent agreement with numerical simulations. Furthermore, we provide first direct experimental evidence that the nanoscale confined and strongly enhanced fields at the antenna gap are linearly polarized. s-SNOM vector-field mapping paves the way to a full near-field characterization of nanophotonic structures in the broad spectral range between visible and terahertz frequencies, which is essential for future development and quality control of metamaterials, optical sensors, and waveguides.
Descripción5 páginas, 3 figuras.
Versión del editorhttp://dx.doi.org/10.1021/nl101693a
URIhttp://hdl.handle.net/10261/48395
DOI10.1021/nl101693a
ISSN1530-6984
E-ISSN1530-6992
Aparece en las colecciones: (CFM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.