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Theory of Thermal Emissivity and Enhanced Absorption in Sub-wavelength Metallo-Dielectric Photonic Crystals

Published online by Cambridge University Press:  01 February 2011

Rana Biswas ,
Irina Puscasu ,
Martin Pralle ,
Martin McNeal ,
Anton Greenwald ,
James Daly ,
Edward Johnson ,
Srinivas Neginhal  and
Changgeng Ding
Rana Biswas
Affiliation:
[email protected], Iowa State University, Dept of Physics, Microelectronics Res Ctr, Ames Laboratory, Dept of Electrical & Computer Engineering, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Irina Puscasu
Affiliation:
[email protected], Ion Optics, 411 Waverly Oaks Road, Waltham, MA, 02452, United States
Martin Pralle
Affiliation:
[email protected], Ion Optics, 411 Waverly Oaks Road, Waltham, MA, 02452, United States
Martin McNeal
Affiliation:
[email protected], Ion Optics, 411 Waverly Oaks Road, Waltham, MA, 02452, United States
Anton Greenwald
Affiliation:
[email protected], Ion Optics, 411 Waverly Oaks Road, Waltham, MA, 02452, United States
James Daly
Affiliation:
[email protected], Ion Optics, 411 Waverly Oaks Road, Waltham, MA, 02452, United States
Edward Johnson
Affiliation:
[email protected], Ion Optics, 411 Waverly Oaks Road, Waltham, MA, 02452, United States
Srinivas Neginhal
Affiliation:
[email protected], Iowa State University, Dept. of Electrical and Computer Engineering, Ames, IA, 50011, United States
Changgeng Ding
Affiliation:
[email protected], Iowa State University, Dept of Physics and Microelectronics Research Center, Ames, IA, 50011, United States
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Abstract

Metallo-dielectric photonic crystals are sharp thermal emitters at infrared wavelengths, and are being employed in sensors. We describe the theory of thermal emission and enhanced absorption in these photonic crystals using a scattering matrix approach, where Maxwell's equations are solved in Fourier space. A sub-wavelength hole array in a metal layer is coupled to a two-dimensional photonic crystal of the same periodicity in these metallo-dielectric photonic crystals. The sub-wavelength hole array has an enhanced transmission mode that couples to a weakly guided mode of the photonic crystal having similar modal character. The transmissive mode of the hole array is absorbed by the photonic crystal to create a sharp absorption and reflective minimum. The enhanced absorption is investigated in different lattice symmetries.

Keywords

simulationsensornanoscale
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1014: Symposium AA – Three-Dimensional Nano- and Microphotonics , 2007 , 1014-AA11-05
Copyright
Copyright © Materials Research Society 2007

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