Large-angle beam steering using all-optical liquid crystal spatial light modulators

Tabiryan, N.V.; Nersisyan, S.R.
June 2004
Applied Physics Letters;6/21/2004, Vol. 84 Issue 25, p5145
Academic Journal
We have demonstrated operation of an all-optical liquid crystal (spatial light modulator) used for steering a laser beam over large angles. Continuous steering over ±12.4° is achieved, controlled by the power of an infrared pump beam; This is a very large steering angle for a nonmechanical nondiffractive system.


Related Articles

  • Experimental evidence of convective and absolute instabilities in optics. Szwaj, Christophe; Louvergneaux, Eric; Agez, Gonzague; Glorieux, Pierre; Taki, Majid // AIP Conference Proceedings;2004, Vol. 742 Issue 1, p261 

    We evidence experimentally the convective and absolute instabilities in an optical system. In our system, the presence of noise and spatial non-uniformities (as in most of the “real systems”) add additional complexities. First we derive analytical expressions of both thresholds for...

  • Mode splitting in an optical slab waveguide filled with nematic liquid crystals. Lin, T.-S.; Lue, J.-T. // Applied Physics B: Lasers & Optics;2003, Vol. 76 Issue 5, p561 

    Mode splitting was observed when a He-Ne laser beam was reflected through a prism-coupled liquid-crystal slab waveguide under an applied electric field. The splitting manifests itself as the imposed voltage reaches a critical level, and diminishes when the voltage increases above a critical high...

  • Phase contrast imaging using photothermally induced phase transitions in liquid crystals. Yelleswarapu, Chandra S.; Kothapalli, Sri-Rajasekhar; Aranda, Francisco J.; Rao, D. V. G. L. N.; Vaillancourt, Yvonne R.; Kimball, Brian R. // Applied Physics Letters;11/20/2006, Vol. 89 Issue 21, p211116 

    Phase contrast imaging is performed for live biological species using photothermal induced birefringence in dye doped liquid crystals. Using typical 4-f configuration, when liquid crystal cell is at back focal plane of Fourier lens, low spatial frequencies at center of Fourier spectrum are...

  • Alignment layer effects on thin liquid crystal cells. Jiao, Meizi; Ge, Zhibing; Song, Qiong; Wu, Shin-Tson // Applied Physics Letters;2/11/2008, Vol. 92 Issue 6, p061102 

    Factors affecting the thin cell performance of a liquid crystal cell are analyzed. Examples based on vertically aligned thin cells are given to illustrate these effects. When the cell gap is below ∼2 μm, the liquid crystal alignment material, layer thickness, and anchoring energy all...

  • Optically switchable biphotonic gratings based on dye-doped cholesteric liquid crystal films. Yeh, H.-C.; Chen, G.-H.; Lee, C.-R.; Mo, T.-S. // Applied Physics Letters;6/25/2007, Vol. 90 Issue 26, p261103 

    This study elucidates optically switchable gratings (BGs) based on biphotonic effect in dye-doped cholesteric liquid crystal films. When one circularly polarized green beam is switched on (off), the gratings can be turned on (off) by illumination with an interference field generated by two...

  • Note: High capacity digital laser beam steering system. Hebert, D.; Cantu, P.; Washington, C.; Ajala, O.; Feldman, M. // Review of Scientific Instruments;Nov2011, Vol. 82 Issue 11, p116101 

    The combination of liquid crystal cells with polarizing cube beam splitters has been used to direct a beam of light to multiple directions. The polarization at each beam splitter is controlled by applying a signal to a corresponding liquid crystal cell. Ten cascaded stages have deflected a HeNe...

  • Optically addressed As50Se50-liquid crystal structure highly sensitive to He-Ne laser radiation. Amosova, L.; Chaika, A. // Technical Physics Letters;Mar2007, Vol. 33 Issue 3, p255 

    An optically addressed structure of the As x Se1- x -liquid crystal (LC) type, with the photoconductor composition deviating from stoichiometry toward excess arsenic, has been tested using holographic techniques. It is established that the As50Se50-LC structure (with maximum possible arsenic...

  • Continuous Spatial Tuning of Laser Emissions in a Full Visible Spectral Range. Mi-Yun Jeong; Jeong Weon Wu // International Journal of Molecular Sciences;Mar2011, Vol. 12 Issue 3, p2007 

    In order to achieve a continuous tuning of laser emission, the authors designed and fabricated three types of cholesteric liquid crystal cells with pitch gradient, a wedge cell with positive slope, a wedge cell with negative slope, and a parallel cell. The length of the cholesteric liquid...

  • Liquid crystals: Defects dictated. Broer, Dirk J. // Nature Materials;Feb2010, Vol. 9 Issue 2, p99 

    The article informs that it is possible to extend the use of liquid crystals (LC) beyond its use in flat-panel televisions, notebook screens and interactive displays in mobile devices. It is stated that laser light can manipulate the local molecular order of the LC causing the formation of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics