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All-optical switching of holographic gratings made of polymer-liquid- crystal-polymer slices containing azo-compounds

Abstract:

We present the observation of an all-optical switching effect that takes place when a light beam of suitable wavelength irradiates a "layered" structure made of polymer slices alternated to films of well aligned liquid crystal (LC) which contain also a small percentage of azo-LC molecules. The simple and reliable fabrication procedure exploits a holographic UV curing technique. The observed switching effect takes place in samples that exhibit diffraction efficiency as high as 85% and is induced in less than 0.5 s by an unfocused pump beam of 245 mW/ cm2 power density. ; 2008 American Institute of Physics.

Año de publicación:

2008

Keywords:

    Fuente:

    googlegoogle
    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Fibra óptica
    • Polímero
    • Ciencia de materiales

    Áreas temáticas:

    • Instrumentos de precisión y otros dispositivos
    • Magnetismo
    • Imprenta y actividades conexas

    Contribuidores:

    Tabiryan N.V.Tabiryan N.V.
    Umeton C.P.Umeton C.P.
    Alessandro VeltriAlessandro Veltri
    De Sio L.De Sio L.
    Serak S.Serak S.