Optimizing the Superlens: manipulating geometry to enhance the resolution

Details Optimizing the Superlens: manipulating geometry to enhance the resolution Optimizing the Superlens: manipulating geometry to enhance the resolution

2005-09-08

arxiv.org/abs/physics/0509067v1

Applied Physics Letters, v.87, p.231113 (2005)

Physics

Optics

Scientific paper

10.1063/1.2139620

We analyze the performance of a planar lens based on realistic negative index material in a generalized geometry. We demonstrate that the conventional superlens design (where the lens is centered between the object and the image) is not optimal from the resolution point-of-view, develop an analytical expression for the resolution limit of a generalized lens, use it to find the optimum lens configuration, and calculate the maximum absorption practical nearfield superlenses may have. We demonstrate that in contrast to the conventional superlens picture, planar imaging is typically accompanied by excitation of surface waves at both interfaces of the lens.

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