Title :
Highly/directional sources by periodic and non-periodic dielectric rods
Author :
Sanchez-Dehesa, J. ; Martínez, A. ; Piqueras, M.A. ; Garcia, R. ; Hakansson, A.
Author_Institution :
Nanophotonics Technol. Center, Valencia
Abstract :
We show that an omnidirectional point source embedded in a photonic crystal designed to possess a small and negative index of refraction becomes in a highly-directional beam because of the photonic crystal. The slab makes a filtering of high transverse wavevectors of the diverging beam. The predicted phenomenon is demonstrated at microwave frequencies (~13 GHz) using a two-dimensional photonic crystal made of alumina rods.
Keywords :
dielectric materials; photonic crystals; refractive index; alumina rods; diverging beam; high transverse wavevectors; highly directional sources; highly-directional beam; nonperiodic dielectric rods; omnidirectional point source; photonic crystal; refraction index; Dielectrics; Electromagnetic scattering; Filtering; Microwave filters; Microwave frequencies; Nanophotonics; Optical refraction; Particle scattering; Photonic crystals; Slabs;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386562
