• Compact Fourier-transform volume holographic spectrometer for diffuse source spectroscopy 

      Hsieh, Chaoray; Momtahan, Omid; Karbaschi, Arash; Adibi, Ali (Georgia Institute of TechnologyOptical Society of America, 2005-04)
      We present a new idea for diffuse source spectroscopy using a Fourier-transform volume holographic spectrometer formed by a Fourier-transform lens, a volume hologram, and a CCD. We show that this spectrometer can operate ...
    • Dynamic optical correlation using localized holography 

      Karbaschi, Arash; Momtahan, Omid; Adibi, Ali (Georgia Institute of TechnologyOptical Society of America, 2007-03)
      A new technique for optical correlation using gated holographic recording is demonstrated. Several persistent holograms are localized within separate slices as close as 33 μm apart along the crystal. Individual holograms ...
    • Dynamic pattern recognition and data storage using localized holographic recording 

      Karbaschi, Arash (Georgia Institute of Technology, 2008-05-05)
      A new technique for optical pattern recognition with two-center recording of persistent holograms in doubly doped LiNbO₃3:Fe:Mn crystal is presented, by which the holograms are localized in separate slices along the recording ...
    • Optical correlation using gated localized holography 

      Karbaschi, Arash; Momtahan, Omid; Adibi, Ali; Javidi, Bahram (Georgia Institute of TechnologySociety of Photo-optical Instrumentation Engineers (SPIE), 2005-08)
      We present a new technique for optical correlation using gated holographic recording by which the holograms are localized in separate slices along the recording medium. We compare the performance of localized holographic ...
    • Qualitative demonstration of spectral diversity filtering using spherical beam volume holograms 

      Karbaschi, Arash; Hsieh, Chaoray; Momtahan, Omid; Adibi, Ali; Sullivan, Michael E.; Brady, David J. (Georgia Institute of TechnologyOptical Society of America, 2004-06)
      We investigate the feasibility of designing spectral diversity filters using spherical beam volume holograms. Our experimental results qualitatively show the separation of the information of different incident wavelength ...
    • Role of recording geometry in the performance of spectral diversity filters with spherical beam volume holograms 

      Hsieh, Chaoray; Momtahan, Omid; Karbaschi, Arash; Adibi, Ali; Sullivan, Michael E.; Brady, David J. (Georgia Institute of TechnologyOptical Society of America, 2005-01)
      We present experimental demonstrations of spectral diversity filters with spherical beam volume holograms for multimodal multiplex spectroscopy. Major properties of filters under diffuse-light illumination are discussed. ...
    • Spherical beam volume holograms for spectroscopic applications: modeling and implementation 

      Momtahan, Omid; Hsieh, Chaoray; Karbaschi, Arash; Adibi, Ali; Sullivan, Michael E.; Brady, David J. (Georgia Institute of TechnologyOptical Society of America, 2004-12)
      The spherical beam volume hologram, recorded by a plane wave and a spherical beam, is investigated for spectroscopic applications in detail. It is shown that both the diffracted and the transmitted beam can be used for ...
    • Volumetric storage limits and space-volume multiplexing trade-offs for holographic channels 

      Srinivasa, Shayan G.; Momtahan, Omid; Karbaschi, Arash; McLaughlin, Steven W.; Fekri, Faramarz; Adibi, Ali (Georgia Institute of TechnologySociety of Photo-optical Instrumentation Engineers (SPIE), 2010-01)
      We consider M-ary signaling in page-oriented holographic storage systems that multiplex pages using three methods: conventional angular multiplexing throughout the volume, localized recording, and a combination of angular ...