Title :
Focusing by a flat woodpile 3D photonic crystal
Author :
Maigyte, Lina ; Cojocaru, C. ; Purlys, Vytautas ; Trull, J. ; Gailevicius, Darius ; Peckus, Martynas ; Malinauskas, Mangirdas ; Staliunas, K.
Author_Institution :
Dept. de Fis. i Eng. Nucl., Univ. Politec. de Catalunya, Terrassa, Spain
Abstract :
We investigate spatial propagation effect behind the Photonic Crystal under particular dispersion conditions, which lead to a near field focusing. We analyze and experimentally demonstrate full two-dimensional near field focusing of light beams at visible frequencies behind the flat three-dimensional woodpile photonic crystal. Experimental results correspond well with numerical FDTD calculations as well as with the mode expansion studies. The focusing distance of 50 - 70 μm behind the crystal is obtained.
Keywords :
finite difference time-domain analysis; light propagation; optical dispersion; optical focusing; optical materials; photonic crystals; FDTD calculations; dispersion conditions; distance 50 mum to 70 mum; flat woodpile 3D photonic crystal; mode expansion; spatial propagation effect; two-dimensional near field focusing; Acoustic beams; Crystals; Dispersion; Focusing; Laser beams; Photonic crystals; Three-dimensional displays; Photonic crystals; beam shaping; focusing; modulated materials;
Conference_Titel :
Transparent Optical Networks (ICTON), 2013 15th International Conference on
Conference_Location :
Cartagena
DOI :
10.1109/ICTON.2013.6602990
