Optical propagation through graded-index metamaterials in the presence of gain

Ivan D Rukhlenko

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1 Citation (Scopus)


We present a comparative theoretical study of electromagnetic wave propagation through randomly structured isotropic and stratified anisotropic active metamaterial slabs, whose refractive indices vary smoothly from positive values on one end of the slabs to negative values on the other. The chief advantage of our two configurations over recent hypothetical structures is that they can be made from real materials using common fabrication techniques. We find that even a small excess of gain (loss) in the randomly structured slab can result in a strong resonant amplification (absorption) of incident field on the length scale of an optical wavelength. This collective effect-somewhat similar to Landau amplification (damping) in a collisionless plasma-may prove useful in making compact optical amplifiers and perfect light absorbers.
Original languageEnglish
Pages (from-to)1257 - 1263
Number of pages7
Issue number6
Publication statusPublished - 2014

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