We report a new approach to expand the diffraction bandwidth of a photorefractive device in the longitudinal-field geometry by using asymmetric coupled quantum well (ACQW) structures. The longitudinal-field geometry is another configuration of PR MQW devices. Compared with devices in the transverse-field geometry, larger diffraction efficiency is obtained with a smaller operating voltage (10-20V) in the longitudinal-field geometry. The device has a photorefractive p-i-n structure.


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    Titel :

    Broadband diffraction in a photorefractive asymmetric coupled quantum well structure


    Beteiligte:
    Iwamoto, S. (Autor:in) / Nishioka, M. (Autor:in) / Someya, T. (Autor:in) / Arakawa, Y. (Autor:in) / Shimura, T. (Autor:in) / Kuroda, K. (Autor:in)


    Erscheinungsdatum :

    2001-01-01


    Format / Umfang :

    151461 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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