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Proceedings Paper

Theoretical and experimental study of infrared reflection transmission and thermal emission from lamellar grating
Author(s): Nathan Pinhas; Mark Auselender; Shlomo Hava; Ari Cohen-Nov
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Paper Abstract

Infrared spectral transmission, reflection and thermal emission from diffraction gratings with differing periods, groove widths and groove depths were experimentally and theoretically studied. The structural dimensions are comparable to the measured spectral wavelengths in the range 2.5 to 25 microns. For calculating the optical properties (transmission and reflection spectra), we have used an in-house S-Matrix Propagation Algorithm (SMPA) technique which is unconditionally stable versus changes in structural dimensions, optical constants and truncation order. We have experimentally studied the planar angular transmission and reflection spectrum of Si and GaAs grating samples, using FTIR spectrometry over the spectral range from 2.5 μm to 25 μm. At λ < Λ, the transmitted intensity is quasi-periodic with respect to wave number. A similar property also appears in the reflection spectra. The theoretical results for spectral transmission are in good agreement with the experimental results for the wavelength range 2.5 to 25 μm.

Paper Details

Date Published: 9 July 2004
PDF: 6 pages
Proc. SPIE 5360, Photonic Crystal Materials and Devices II, (9 July 2004); doi: 10.1117/12.527946
Show Author Affiliations
Nathan Pinhas, Ben-Gurion Univ. of the Negev (Israel)
Mark Auselender, Ben-Gurion Univ. of the Negev (Israel)
Shlomo Hava, Ben-Gurion Univ. of the Negev (Israel)
Ari Cohen-Nov, Gal El (MMIC) (Israel)

Published in SPIE Proceedings Vol. 5360:
Photonic Crystal Materials and Devices II
Ali Adibi; Axel Scherer; Shawn-Yu Lin, Editor(s)

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