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      Photonic bandgap infrared spectrometer

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      Author
      Kondakci, H.E.
      Yaman, M.
      Dana, A.
      Bayındır, Mehmet
      Date
      2010
      Source Title
      Applied Optics
      Print ISSN
      1559-128X
      Electronic ISSN
      0003-6935
      Publisher
      Optical Society of America
      Volume
      49
      Issue
      18
      Pages
      3596 - 3600
      Language
      English
      Type
      Article
      Item Usage Stats
      121
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      Abstract
      We propose and demonstrate an infrared (IR) absorption spectrometer, made with a spatially variable photonic bandgap (PBG) structure, a blackbody source, and a simple IR detector, to identify the IR molecular fingerprints of analyte molecules. The PBG-based structure consists of thermally evaporated, IR transparent, high-refractive-index chalcogenide quarter-wave stacks (QWS) with a cavity layer. Spatial variation of the very sharp transmission peak due to the QWS cavity mode allows the structure to be used as a variable IR filter. Our proposed IR-PBG spectrometer can be used for detection and identification of volatile organic compounds.
      Keywords
      Energy gap
      Spectrometers
      Spontaneous emission
      Volatile organic compounds
      Absorption spectrometers
      Analyte molecules
      Blackbody sources
      Cavity layers
      Cavity mode
      IR detector
      IR filters
      Molecular fingerprint
      Photonic band-gap structures
      Quarter wave stacks
      Spatial variations
      Transmission peaks
      Spectrometry
      Permalink
      http://hdl.handle.net/11693/22290
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/AO.49.003596
      Collections
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
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