Near-field pattern synthesis at optical frequencies

Lucio Vegni; Filiberto Bilotti

doi:10.1117/12.825083

1 September 2009 Near-field pattern synthesis at optical frequencies

Lucio Vegni, Filiberto Bilotti

Proceedings Volume 7392, Metamaterials: Fundamentals and Applications II; 73921D (2009) https://doi.org/10.1117/12.825083
Event: SPIE NanoScience + Engineering, 2009, San Diego, California, United States

Abstract

In this work, we present the design of a reactive screen to synthesize a desired field pattern with sub-wavelength features at visible frequencies. Following the recent theoretical developments in the field of optical nano-circuits, the screen consists of a discrete set of dielectric cells, behaving as lumped reactive elements in the visible. The spatial distribution of the cells enables the focalization of a sub-wavelength spot at a prescribed focal distance. The resolution achievable with the proposed technique depends on the electrical size of the cells and on their mutual separations. The theoretical expectations are confirmed by the numerical results, obtained through a proper full-wave simulator based on the finite integration technique. Some design examples are, finally, presented to show some of the capabilities of the proposed method.

Citation Download Citation

Lucio Vegni and Filiberto Bilotti "Near-field pattern synthesis at optical frequencies", Proc. SPIE 7392, Metamaterials: Fundamentals and Applications II, 73921D (1 September 2009); https://doi.org/10.1117/12.825083

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