@article {3638,
title = {Toy model for plasmonic metamaterial resonances coupled to two-level system gain},
journal = {Optics Express},
volume = {16},
number = {24},
year = {2008},
note = {381URTimes Cited:0Cited References Count:27},
month = {11/24},
pages = {19785-19798},
abstract = {We propose, solve, and discuss a simple model for a metamaterial incorporating optical gain: A single bosonic resonance is coupled to a fermionic (inverted) two-level-system resonance via local-field interactions. For given steady-state inversion, this model can be solved analytically, revealing a rich variety of (Fano) absorption/gain lineshapes. We also give an analytic expression for the fixed inversion resulting from gain pinning under steady-state conditions. Furthermore, the dynamic response of the "lasing SPASER", i.e., its relaxation oscillations, can be obtained by simple numerical calculations within the same model. As a result, this toy model can be viewed as the near-field-optical counterpart of the usual LASER rate equations. (c) 2008 Optical Society of America},
keywords = {negative-index metamaterials, wavelengths},
isbn = {1094-4087},
doi = {10.1364/OE.16.019785},
url = {://000261561900038},
author = {Wegener, M. and Garcia-Pomar, J. L. and Soukoulis, C. M. and Meinzer, N. and Ruther, M. and Linden, S.}
}