Gradient Index Media have multiple applications for controlling the wave propagation and harvesting its received energy or processing its embedded data. A nanofabrication process was developed to produce a Luneburg lens on silicon, to operate in the optical regime, with feature sizes smaller than 100nm. The focused energy of the Luneburg lens is compared with lenses of non-spatially-varying index as well as a linear spatial variation, and its enhanced focusing is clearly demonstrated. In addition, a mechanism of thermal tunability of such devices is proposed and is supported by our results.


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    Title :

    Nanoscale gradient index media fabrication for extreme control and tunability of optical wave propagation




    Publication date :

    2014-06-01


    Size :

    1374079 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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