Title :
Metamaterials with 100% absorption over a large frequency range
Author :
Driessen, Eduard F C ; de Dood, Michiel J.A.
Author_Institution :
Huygens Lab., Univ. Leiden, Leiden, Netherlands
Abstract :
Although very desirable for detector applications and photovoltaic cells, thin film materials that absorb all incoming light are extremely hard to find. In this work, we introduce a metamaterial consisting of a meandering wire of only a few nanometer thickness that can absorb all incident radiation when the film is illuminated at the critical angle for total internal reflection. The observed effect occurs for s-polarized radiation in very lossy metals or dielectrics for which the imaginary part of the dielectric constant is much larger than the real part.
Keywords :
light absorption; metamaterials; permittivity; photovoltaic cells; absorption; dielectric constant; internal reflection; large frequency range; metamaterials; photovoltaic cells; s-polarized radiation; thin film materials; Absorption; Dielectric constant; Dielectric losses; Frequency; Metamaterials; Optical films; Optical reflection; Photovoltaic cells; Transistors; Wire;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5191668