Broadband circularly-polarized infrared emission from multilayer metamaterials
Abbreviated Journal Title
Opt. Mater. Express
COHERENT THERMAL EMISSION; PHOTONIC CRYSTALS; KIRCHHOFFS LAW; NEAR-FIELD; RADIATION; SURFACES; SILICON; DEVICE; WAVES; BODY; Materials Science, Multidisciplinary; Optics
Development of a 2D metamaterial that preferentially emits broadband circularly-polarized (CP) infrared radiation is hindered by the fact that orthogonal electric-field components are uncorrelated at the surface of the thermal emitter, a consequence of the fluctuation-dissipation theorem. We achieve broadband CP thermal emission by fabricating a meanderline quarter-wave retarder on a transparent thermal-isolation layer. Behind this isolation layer, in thermal contact with the emitter, is a wire-grid polarizer. Along with an unavoidable linear polarized radiation characteristic from the meanderline, we measured a degree of circular polarization (DOCP) of 28%, averaged over the 8- to 12 mu m band. (C) 2011 Optical Society of America
Optical Materials Express
"Broadband circularly-polarized infrared emission from multilayer metamaterials" (2011). Faculty Bibliography 2010s. 2054.