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Proceedings Paper

All-chalcogenide variable infrared filter
Author(s): H. Esat Kondakci; Ozlem Koylu; Mecit Yaman; Aykutlu Dana; Mehmet Bayindir
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Paper Abstract

We present the design, fabrication, characterization of spatially variable infrared filter and a demonstration of the filter as a simple infrared spectrometer. A varying photonic band gap filter which consists of thermally evaporated, high refractive index contrast amorphous chalcogenide glass multilayers, makes the structure suitable to be used as spectrometer. Due to graded thickness structure, the filter exhibits a position dependent stop band and a cavity mode ranging from 2 to 8 μm wavelengths. It is demonstrated that the filter can be used to detect absorption peaks of common gases in the cavity mode range of the filter.

Paper Details

Date Published: 27 August 2009
PDF: 7 pages
Proc. SPIE 7419, Infrared Systems and Photoelectronic Technology IV, 74190A (27 August 2009); doi: 10.1117/12.825468
Show Author Affiliations
H. Esat Kondakci, Bilkent Univ. (Turkey)
Ozlem Koylu, Bilkent Univ. (Turkey)
Mecit Yaman, Bilkent Univ. (Turkey)
Aykutlu Dana, Bilkent Univ. (Turkey)
Mehmet Bayindir, Bilkent Univ. (Turkey)

Published in SPIE Proceedings Vol. 7419:
Infrared Systems and Photoelectronic Technology IV
Eustace L. Dereniak; Randolph E. Longshore; Ashok K. Sood; John P. Hartke; Paul D. LeVan, Editor(s)

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