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      All-chalcogenide glass omnidirectional photonic band gap variable infrared filters

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      Author
      Kondakci, H. E.
      Yaman, M.
      Koylu, O.
      Dana, A.
      Bayındır, Mehmet
      Date
      2009
      Source Title
      Applied Physics Letters
      Print ISSN
      1077-3118
      Publisher
      AIP Publishing
      Volume
      94
      Issue
      11
      Pages
      111110-1 - 111110-3
      Language
      English
      Type
      Article
      Item Usage Stats
      129
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      111
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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 gap
      Glass
      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
      Permalink
      http://hdl.handle.net/11693/22801
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.3103279
      Collections
      • Department of Physics 2358
      • Institute of Materials Science and Nanotechnology (UNAM) 1869
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