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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 16 — Jun. 1, 2002
  • pp: 3327–3331

Calculated photonic structures for infrared emittance control

Andreas Rung and Carl G. Ribbing  »View Author Affiliations


Applied Optics, Vol. 41, Issue 16, pp. 3327-3331 (2002)
http://dx.doi.org/10.1364/AO.41.003327


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Abstract

Using an available program package based on the transfer-matrix method, we calculated the photonic band structure for two different structures: a quasi-three-dimensional crystal of square air rods in a high-index matrix and an opal structure of high-index spheres in a matrix of low index, ε = 1.5. The high index used is representative of gallium arsenide in the thermal infrared range. The geometric parameters of the rod dimension, sphere radius, and lattice constants were chosen to give total reflectance for normal incidence, i.e., minimum thermal emittance, in either one of the two infrared atmospheric windows. For these four photonic crystals, the bulk reflectance spectra and the wavelength-averaged thermal emittance as a function of crystal thickness were calculated. The results reveal that potentially useful thermal signature suppression is obtained for crystals as thin as 20–50 µm, i.e., comparable with that of a paint layer.

© 2002 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(350.2770) Other areas of optics : Gratings

History
Original Manuscript: October 2, 2001
Revised Manuscript: January 22, 2002
Published: June 1, 2002

Citation
Andreas Rung and Carl G. Ribbing, "Calculated photonic structures for infrared emittance control," Appl. Opt. 41, 3327-3331 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-16-3327

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