Title :
Subwavelength focusing of light without evanescent waves by an array of nanoholes
Author :
Huang, Fu Min ; Chen, Yifang ; de Abajo, F.Javier Garcia ; Zheludev, Nikolay
Author_Institution :
EPSRC Nanophotonics Portfolio Centre, Optoelectronics Research Center, University of Southampton, SO17 1BJ, UK
Abstract :
We provide the first evidence of free-space subwavelength focusing without evanescent fields using a photonic nano-structure. Hot-spots smaller than half of the wavelength were observed at distances of tens of wavelengths from the structure.
Keywords :
Apertures; Focusing; Frequency; Lenses; Optical arrays; Optical diffraction; Optical films; Optical microscopy; Optical surface waves; Scanning electron microscopy;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2007. QELS '07
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/QELS.2007.4431694
