Title :
Effective in plane launching and focusing surface plasmons by a plasmonic lens
Author :
Wang, Jiayuan ; Zhang, Jiasen ; Gong, Qihuang
Author_Institution :
Dept. of Phys., Peking Univ., Beijing, China
Abstract :
We implement in plane launching and focusing surface plasmons by fabricating Fresnel zone-plate like grating on a thin gold film. A subwavelength focal spot, with transverse FWHM=712 nm, is observed at 830 nm vacuum wavelength.
Keywords :
diffraction gratings; gold; lenses; metallic thin films; optical fabrication; optical films; optical focusing; plasmonics; surface plasmons; Au; Fresnel zone-plate like grating fabrication; plane launching; plasmonic lens; subwavelength focal spot; surface plasmons; thin gold film; wavelength 830 nm; Electromagnetic waveguides; Focusing; Gold; Gratings; Lenses; Optical films; Optical surface waves; Optical waveguides; Physics; Plasmons; (240.6680) Surface plasmons; (260.3910) Metal optics;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
