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Applied Physics Letters / Volume 92 / Issue 19 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 92, 193101 (2008); http://dx.doi.org/10.1063/1.2927484 (3 pages)

Two-dimensional tungsten photonic crystals as selective thermal emitters

Ivan Celanovic, Natalija Jovanovic, and John Kassakian

Laboratory for Electromagnetic and Electronic Systems, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

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(Received 16 April 2008; accepted 21 April 2008; published online 13 May 2008)

This paper presents theory, design, fabrication, and optical characterization of two-dimensional (2D) tungsten (W) photonic crystals (PhC) as selective thermal emitters. We use the photonic band gap of a 2D W PhC, radiating out of a plane of periodicity, to design a selective infrared thermal radiation source that exhibits close to blackbody emittance near the the band gap wavelength and relatively sharp cutoff for wavelengths above the band gap. In addition, we present simple design rules and detailed simulation results for several representative geometries. Microfabrication steps are also presented. Finally, we present detailed experimental results of the optical characterization of three fabricated prototypes that exhibit good agreement with simulation results.

© 2008 American Institute of Physics

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KEYWORDS and PACS

Keywords

blackbody radiation, infrared sources, optical materials, photonic band gap, photonic crystals, tungsten

PACS

  • 42.70.Qs

    Photonic bandgap materials

  • 42.72.Ai

    Infrared sources

  • 44.40.+a

    Thermal radiation

  • 78.20.Ci

    Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2927484

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

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    I. Celanovic, D. Perreault, and J. Kassakian, Phys. Rev. B 72, 075127 (2005).

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    H. Sai, Y. Kanamori, and H. Yugami, Appl. Phys. Lett. 82, 1685 (2003)APPLAB000082000011001685000001.


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