Title :
Tapered gold helices as high-extinction-ratio, broadband circular polarizer
Author :
Gansel, Justyna K. ; Latzel, Michael ; Frölich, Andreas ; Kaschke, Johannes ; Thiel, Michael ; Wegener, Martin
Author_Institution :
Inst. of Appl. Phys., Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany
Abstract :
Tapering is shown to further extend the bandwidth of three-dimensional gold-helix metamaterials as broadband circular polarizers to about 1.5 octaves. Furthermore, the extinction ratio is improved. Theory and experiment show good agreement.
Keywords :
gold; metamaterials; optical polarisers; Au; broadband circular polarizer; extinction ratio; tapered gold helices; three-dimensional gold-helix metamaterials; Bandwidth; Broadband antennas; Broadband communication; Gold; Metamaterials; Nanostructures; Polarization;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
