All-chalcogenide glass omnidirectional photonic band gap variable infrared filters
Author
Kondakci, H. E.
Yaman, M.
Koylu, O.
Dana, A.
Bayındır, Mehmet
Date
2009Source Title
Applied Physics Letters
Print ISSN
1077-3118
Publisher
AIP Publishing
Volume
94
Issue
11
Pages
111110-1 - 111110-3
Language
English
Type
ArticleItem Usage Stats
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Abstract
We report on the design, fabrication, and characterization of spatially variable infrared photonic band gap filter that consists of thermally evaporated, high refractive indexcontrast, amorphous chalcogenide glass multilayers. Due to graded thickness structure, the filter exhibits a position dependent stop band and a cavity mode ranging from 1.8 to 3.4 μm3.4 μmwavelengths. Reflection measurements on the variable filter agree well with theoretical calculations. These results pave the way to low-loss infrared mirrors, filters, spectral imaging, and miniaturized spectrometers at infrared region.
Keywords
Energy gapGlass
Infrared spectrometers
Optical devices
Refractive index
Amorphous chalcogenides
Cavity modes
Chalcogenide glass
High refractive index contrasts
Infrared filters
Infrared regions
Low loss
Photonic band gap filters
Photonic bands
Reflection measurements
Spectral imaging
Stop bands
Theoretical calculations
Variable filters
Photonic band gap