Now showing items 1-15 of 15

    • Circularly configured multi-SLM holographic display system 

      Yaraş, F.; Kang, H.; Onural, L. (IEEE, 2011)
      The designed circular holographic display system produces ghost-like 3D optical reconstructions of a computer generated 3D model. System uses six phase-only reflective-type spatial light modulators (SLMs) that are configured ...
    • Color holographic reconstruction using multiple SLMs and LED illumination 

      Yaraş, F.; Onural, L. (S P I E - International Society for Optical Engineering, 2009)
      A color holographic reconstruction technique by using three light emitting diodes (LEDs) is described. Reflective type phase-only spatial light modulators (SLMs) are used since they are suitable for in-line phase holograms. ...
    • Current research activities on holographic video displays 

      Onural, L.; Yaraş, F.; Kang, H. (S P I E - International Society for Optical Engineering, 2010)
      "True 3D" display technologies target replication of physical volume light distributions. Holography is a promising true 3D technique. Widespread utilization of holographic 3D video displays is hindered by current technological ...
    • Electrically controlled terahertz spatial light modulators with graphene arrays 

      Kakenov, N.; Takan, T.; Ozkan, V. A.; Balci, O.; Polat, E. O.; Altan, H.; Kocabas, C. (Institute of Electrical and Electronics Engineers Inc., 2016)
      Gate-tunable high-mobility electrons on atomically thin graphene layers provide a unique opportunity to control electromagnetic waves in a very broad spectrum. In this paper, we describe an electrically-controlled multipixel ...
    • Full-complex amplitude modulation with binary spatial light modulators 

      Ulusoy, E.; Onural, L.; Ozaktas, H. M. (Optical Society of America, 2011-10-19)
      Imperfections and nonrobust behavior of practical multilevel spatial light modulators (SLMs) degrade the performance of many proposed full-complex amplitude modulation schemes. We consider the use of more robust binary ...
    • Graphene-based optical modulators 

      Balci S.; Kocabas, C. (World Scientific Publishing Co. Pte. Ltd., 2017)
      In this chapter, we summarize the recent progress on graphene based optical modulators. Ability to control density of high mobility electrons on large area graphene surface enables realization of new type of electrooptical ...
    • Integral imaging using phase-only LCoS spatial light modulators as Fresnel lenslet arrays 

      Ÿontem, A. O.; Onural, L. (Optical Society of Amercia, 2011-10-27)
      We present a digital integral imaging system. A Fresnel lenslet array pattern is written on a phase-only LCoS spatial light modulator device (SLM) to replace the regular analog lenslet array in a conventional integral ...
    • Integrated asymmetric vertical coupler pressure sensors 

      Kiyat I.; Kocabas, A.; Akcag I.; Aydinli, A. (2004)
      Design and analysis of a novel pressure sensor based on a silicon-on-insulator asymmetric integrated vertical coupler is presented. The coupler is composed of a single mode low index waveguide and a thin silicon slab. ...
    • Method to enlarge the hologram viewing window using a mirror module 

      Kang H.; Ohmura, N.; Yamaguchi, T.; Yoshikawa H.; Kim, S.-C.; Kim, E.-S. (2009)
      A liquid crystal panel for a video projector is often used for holographic television. However, its pixel size and pixel number are not enough for practical holographic 3-D display. Therefore, a multipanel configuration ...
    • Multi-SLM holographic display system with planar configuration 

      Yaraş, F.; Kang, H.; Onural, L. (IEEE, 2010)
      Holographic display system that uses six phase-only spatial light modulators (SLMs) performs holographic reconstructions from the phase-hologram of a point cloud that is extracted from 3D object. The SLMs are tiled as a ...
    • An overview of research in 3DTV 

      Onural, L. (2007)
      3DTV is regarded by the experts and the general public as the next major step in video technologies. The ghost-like images of remote persons or objects are already depicted in many futuristic movies; both entertainment ...
    • Real-time color holographic video display system 

      Yaraş, F.; Kang, H.; Onural, L. (IEEE, 2009)
      A real-time multi-GPU color holographic video display system computes holograms from 3D video of a rigid object. System has three main stages; client, server and optics. 3D coordinate and texture information are kept in ...
    • Signal processing for three-dimensional holographic television displays that use binary spatial light modulators 

      Ulusoy, E.; Onural L.; Ozaktas, H., M. (2010)
      One of the important techniques used for three dimensional television (3DTV) is holography. In holographic 3DTV, spatial light modulators (SLM) are used as the display device. SLMs that provide the most limited modulation ...
    • Synthesis of three-dimensional light fields with binary spatial light modulators 

      Ulusoy, E.; Onural, L.; Ozaktas, H. M. (Optical Society America, 2011-05-24)
      Computation of a binary spatial light modulator (SLM) pattern that generates a desired light field is a challenging quantization problem for which several algorithms have been proposed, mainly for far-field or Fourier plane ...
    • Trends in development of dynamic holographic displays 

      Sainov V.; Stoykova, E.; Onural L.; Ozaktas, H., M. (2006)
      Creation of a dynamic 3-D display based on holography, in which a 3-D scene is encoded in terms of optical diffraction, transformed into the fringe patterns of the hologram that is further converted into a signal for a ...