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Simulations of Sub-wavelength Metallo-dielectric Photonic Crystals for Gas Sensing

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:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Irina Puscasu
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Martin Pralle
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Martin McNeal
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Anton Greenwald
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
James Daly
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Edward Johnson
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Srinivas Neginhal
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
Changgeng Ding
Affiliation:
biswasr@iastate.edu, Iowa State University, Physics& Astronomy/Electrical & Computer Engineering, Ames Laboratory, Microelectronics Research Center,, Ames, IA, 50011, United States, 515-294-6987, 515-294-0689
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Abstract

We have simulated metallo-dielectric photonic crystals that are sharp thermal emitters at infrared wavelengths, and are being employed in gas sensors. The simulations were performed with a rigorous scattering matrix approach where Maxwell's equations are solved in Fourier space. These metallo-dielectric photonic crystals consist of a sub-wavelength hole array in a metal layer coupled to a two-dimensional photonic crystal of the same periodicity. The sub-wavelength hole array has an enhanced transmission mode that couples to a guided mode of the photonic crystal. The transmissive mode of the hole array is absorbed by the photonic crystal to create a sharp absorption and reflective minimum feature found for a range of lattice spacing. The structure thermally emits in a narrow band of wavelengths controlled by the lattice spacing that can be tuned over the infrared region. The underlying physics of this emissive device is modeled with rigorous scattering matrix simulations.

Keywords

sensorsimulationPt
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 952: Symposium F – Integrated Nanosensors , 2006 , 0952-F02-02
Copyright
Copyright © Materials Research Society 2007

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References

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