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Proceedings Paper

Experimental study of infrared thermal emission from periodic microcavities
Author(s): Nathan Pinhas; Mark Auselender; Shlomo Hava; Ari Cohen-Nov
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Paper Abstract

In this paper we present a study of infrared spectral thermal emission from varius grating structures. The structures include various lamellar grating layers of metals, silicon or GaAs on the same semiconductor substrate. The gratings have different periods, groove widths and groove depths, with feature sizes comparable to the radiated measurement wavelengths (2.5 - 25 μm). The measurement temperatures for all samples were in the range 27 to 740°K. Lateral and vertical optical confinement in the grating layers can occur. In the semiconductor grating layer in the case where the material is partially transparent lateral optical coupling exist which affect the spectral emission. In addition vertical confinement of the electromagnetic field exists which corresponds to "organ-pipe" like modes. The vertical confinement is enhanced in the case where the grating scructure is coated with metal or degenerate semiconductor. These phenomena resulted in thermal emission spectral oscillation for the wavelength range larger than the grating period.

Paper Details

Date Published: 9 July 2004
PDF: 4 pages
Proc. SPIE 5360, Photonic Crystal Materials and Devices II, (9 July 2004); doi: 10.1117/12.527939
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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