Title :
Three-dimensional winged nanocone optical antennas
Author :
M. J. Huttunen;D. Andriano;J. Mäkitalo;K. Lindfors;G. Bautista;M. Lippitz;M. Kauranen
Author_Institution :
Dept. of Phys., Tampere Univ. of Technol., Tampere, Finland
fDate :
5/1/2013 12:00:00 AM
Abstract :
Optical antennas convert propagating far-field radiation into localized near-fields. Perhaps the simplest optical antenna is a sharp metal tip, which is commonly utilized in near-field microscopy and spectroscopy. Usually, the coupling of far-field light to the near-field requires either a field polarized along the tip axis (longitudinal field) or a surface grating on the tip. Here, we demonstrate that efficient transformation of incident far-field radiation to localized energy at the cone apex can be achieved using nanocones with wings oriented perpendicular to the tip axis.
Keywords :
"Antennas","Optical harmonic generation","Optical polarization","Optical device fabrication","Microscopy","Optical microscopy","Optical imaging"
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
DOI :
10.1109/CLEOE-IQEC.2013.6801436