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Opt Express. 2012 Jun 18;20(13):13915-22. doi: 10.1364/OE.20.013915.

Achromatic lens based on a nanowire material with anomalous dispersion.

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University of Coimbra, Department of Electrical Engineering – Instituto de Telecomunicações, 3030-290 Coimbra, Portugal.


Achromatic doublets made of materials with normal dispersion have been used for decades to minimize the effects of chromatic aberrations inherent to single-glass optical lenses. Here, we propose a fundamentally different solution to correct the chromatic aberrations based on a nanowire metamaterial with low loss broadband anomalous dispersion in the visible domain. It is theoretically and numerically shown that the proposed metamaterial lens practically eliminates the chromatic aberrations for all the colors of light, and may be an interesting alternative to conventional achromatic doublets.

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