Summary form only given. A colloidal crystal of submicron-sized polystyrene spheres in water may serve as a photonic crystal owing to the dielectric contrast between the constituent materials. Such photonic crystals exhibit strong attenuation in regions of the transmission spectrum (stop bands) arising from Bragg diffraction of light by the crystal planes. Stop bands in polystyrene colloidal crystals have been observed and studied extensively for both FCC and BCC crystal phases. Photonic crystals also modify the photonic dispersion relation near the stop band. In addition, defect states can be introduced into the stop band of a colloidal photonic crystal by substitutional doping with microspheres of different size or dielectric strength. We have significantly improved the Mach-Zehnder interferometer used in a previous dispersion study. We report the application of the improved instrument to the study of dispersion in a colloidal crystal with defect states present.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effect of defect states on photonic dispersion in colloidal crystals


    Contributors:


    Publication date :

    1999-01-01


    Size :

    331806 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Zone-edge dispersion in photonic colloidal crystals

    Rosner, B.T. / Pradhan, R.D. / Tarhan, I.I. et al. | IEEE | 1997


    Guiding light in colloidal photonic crystals

    Allard, M. / Sargent, E.H. | IEEE | 2003


    PHOTONIC CRYSTALS Demultiplexers harness photonic-crystal dispersion properties

    Momeni, B. / Adibi, A. | British Library Online Contents | 2006


    Buried linear extrinsic defects in colloidal photonic crystals

    Vekris, E. / Kitaev, V. / von Freymann, G. et al. | IEEE | 2005


    Buried Linear Extrinsic Defects in Colloidal Photonic Crystals

    Vekris, E. | British Library Conference Proceedings | 2005