All-chalcogenide variable infrared filter

H. Esat Kondakci; Ozlem Koylu; Mecit Yaman; Aykutlu Dana; Mehmet Bayindir

doi:10.1117/12.825468

27 August 2009 All-chalcogenide variable infrared filter

H. Esat Kondakci, Ozlem Koylu, Mecit Yaman, Aykutlu Dana, Mehmet Bayindir

Proceedings Volume 7419, Infrared Systems and Photoelectronic Technology IV; 74190A (2009) https://doi.org/10.1117/12.825468
Event: SPIE Photonic Devices + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

H. Esat Kondakci, Ozlem Koylu, Mecit Yaman, Aykutlu Dana, and Mehmet Bayindir "All-chalcogenide variable infrared filter", Proc. SPIE 7419, Infrared Systems and Photoelectronic Technology IV, 74190A (27 August 2009); https://doi.org/10.1117/12.825468

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