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Metamaterials enter the physics playground: from EIT to lasing spaser
V.A.Fedotov1, N.Papasimakis1, E.Plum1, S.L.Prosvirnin2 and N.I.Zheludev1
1. Optoelectronics Research Centre, University of Southampton, UK
2. Institute of Radio Astronomy, National Academy of Sciences, Kharkov 61002, Ukraine
We will overview our recent and ongoing research of a novel class of metamaterials exhibiting narrow high-Q transmission and reflection resonances linked to so-called "trapped-modes" excitations, and will introduce a concept of a "coherent" metamaterial, where narrow resonance is formed by a collective response of the entire metamaterial structure rather than by that of individual meta-molecules. Some remarkable parallels between the well established quantum effects and classical electromagnetic response of metamaterials will be explored. Cornerstone quantum phenomena such as the Mossbauer Effect, Einstein-Bose condensation and Electromagnetically Induced Transparency (EIT) are among those that can be mimicked through electromagnetic response of coherent "trapped-mode" metamaterials. Several intriguing applications of this new class of artificial media will be discussed, in particular achieving considerable delays in propagation of electromagnetic pulses, enhancing asymmetric transmission and building a coherent source of electromagnetic radiation fuelled by plasmonic oscillations - the lasing spaser.
 N. I. Zheludev, S. L. Prosvirnin, N. Papasimakis, and V. A. Fedotov, Lasing Spaser, Nature Photonics (published online 25 May 2008).
 V. A. Fedotov, M. Rose, S. L. Prosvirnin, N. Papasimakis, and N. I. Zheludev, Sharp trapped-mode resonances in planar metamaterials with a broken structural symmetry, Phys. Rev. Lett. 99, 147401 (2007).
Metamaterials 2008 Pamplona, Spain 23-26 Sep (2008)
Copyright University of Southampton 2006