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Multi-channel polarized thermal emitter

United States Patent

July 16, 2013
View the Complete Patent at the US Patent & Trademark Office
A multi-channel polarized thermal emitter (PTE) is presented. The multi-channel PTE can emit polarized thermal radiation without using a polarizer at normal emergence. The multi-channel PTE consists of two layers of metallic gratings on a monolithic and homogeneous metallic plate. It can be fabricated by a low-cost soft lithography technique called two-polymer microtransfer molding. The spectral positions of the mid-infrared (MIR) radiation peaks can be tuned by changing the periodicity of the gratings and the spectral separation between peaks are tuned by changing the mutual angle between the orientations of the two gratings.
Lee; Jae-Hwang (Chestnut Hill, MA), Ho; Kai-Ming (Ames, IA), Constant; Kristen P. (Ames, IA)
Iowa State University Research Foundation, Inc. (Ames, IA)
12/ 288,742
October 23, 2008
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made in part with Government support under Contract Number DE-ACO2-06CH11358 awarded by the Department of Energy. The Government has certain rights in this invention.