Title :
Interface engineering for improved light transmittance through photonic crystal flat lenses
Author :
Scherrer, Geoffroy ; Hofman, Maxence ; Smigaj, Wojciech ; Gralak, Boris ; Mélique, Xavier ; Vanbésien, Olivier ; Lippens, Didier ; Dumas, Colette ; Cluzel, Benoit ; De Fornel, Frédérique
Author_Institution :
Lab. Interdisciplinaire Carnot de Bourgogne (ICB), Univ. de Bourgogne, Dijon, France
Abstract :
We present photonic crystal flat lenses with interfaces engineered to improve the light transmittance thanks to a broad angles impedance matching. The interface engineering consists in the realization of antireflection gratings on the edges of the lenses which are designed to reduce the propagative waves reflectivity over a wide range of incident angles. The fabricated structures were measured in optical near-field and a four times enhancement of the light transmission efficiency is reported.
Keywords :
diffraction gratings; lenses; light transmission; optical design techniques; photonic crystals; antireflection grating; broad angle impedance matching; interface engineering; light transmittance; optical near field; photonic crystal flat lenses; propagative wave reflectivity; Lenses; Optical imaging; Optical reflection; Optical refraction; Optical variables measurement; Optimized production technology; Photonic crystals;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050600
