TITLE

Photonic crystal high-efficiency multispectral thermal emitters

AUTHOR(S)
El-Kady, I.; Farfan, G. B.; Rammohan, R.; Taha, M. M. Reda
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p153501
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate through numerical simulation the modification of the thermal emission spectrum by a metallic photonic crystal (PhC). Here the radiation is funneled into a narrow emission band in contrast to the broad spectrum associated with a Planckian-distribution. A detailed quantitative evaluation of the spectral, power, and angular efficiencies of a PhC thermal emitter and its portability across IR spectral bands is provided. We show that an optimized tungsten PhC possesses a predominant narrow-band forward emission profile with an emitter efficiency that is more than double that of an ideal blackbody and ∼65–75% more power-efficient across the IR spectrum.
ACCESSION #
34984764

 

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