Focused femtosecond radially polarized beams were used to excite localized surface plasmons which form a virtual probe on the metal substrate. This was used in the sensing of biological samples in close proximity to the metal and the acquired data was visualized in the form of a local refractive index map. The technique also allows for nonlinear two photon excitation of a fluorescence sample and thus enables concurrent index sensing and multiphoton microscopy.


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    Title :

    SP virtual probe for sensing and imaging biological cells using femtosecond radially polarized beams


    Contributors:
    Moh, K. J. (author) / Yuan, X.-C. (author)


    Publication date :

    2008-12-01


    Size :

    1929632 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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