Optical gain removes absorption and increases resolution in a near-field lens

Details Optical gain removes absorption and increases resolution in a near-field lens Optical gain removes absorption and increases resolution in a near-field lens

2002-06-28

arxiv.org/abs/cond-mat/0206566v1

Phys. Rev. B Vol. 67, 201101(R), (2003)

Physics

Condensed Matter

RevTeX4, 4 pages

Scientific paper

10.1103/PhysRevB.67.201101

A recent paper showed how to construct a lens that focuses near field radiation and hence produce resolution unlimited by wavelength. The prescription requires lossless materials with negative refractive index: finite loss cuts off the finer details of the image. In this paper we suggest compensating for losses by introducing optical gain media into the lens design. Calculations demonstrate a dramatic improvement in performance for a silver/gain composite medium at optical frequencies.

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