The possibility to record a dynamic hologram allows the design of a new generation of optical sensors insensitive to the surface state of the inspected target. The response time of the holographic media governs the performances with a range going from sub-nanometer displacements for ultrasonic vibrations to millimeter displacements for acoustic vibrations. We present a new generation of optical vibration sensors that uses dynamic holography in photorefractive materials to detect sub-nanometer to millimeter transient displacements of rough surfaces.


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    Title :

    Sub-nanometer to millimeter vibration detection by dynamic holography


    Contributors:
    Roosen, G. (author) / de Rossi, S. (author) / Delaye, P. (author)


    Publication date :

    2002-01-01


    Size :

    118212 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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