All-chalcogenide glass omnidirectional photonic band gap variable infrared filters
Kondakci, H. E.
Applied Physics Letters
American Institute of Physics
Kondakci, H. E., Yaman, M., Koylu, O., Dana, A., & Bayindir, M. (2009). All-chalcogenide glass omnidirectional photonic band gap variable infrared filters. Applied Physics Letters, 94(11), 111110.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/13445
We report on the design, fabrication, and characterization of spatially variable infrared photonic band gap filter that consists of thermally evaporated, high refractive index contrast, 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 μm wavelengths. 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. © 2009 American Institute of Physics.