Details

Autor(en) / Beteiligte

• Wadsworth, Samuel L.
• Clem, Paul G.
• Branson, Eric D.
• Boreman, Glenn D.

Titel

Broadband circularly-polarized infrared emission from multilayer metamaterials

Ist Teil von

• Optical materials express, 2011-07, Vol.1 (3), p.466-479

Erscheinungsjahr

2011

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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.