Cooperative resonance linewidth narrowing in a planar metamaterial

Stewart D Jenkins, Janne Ruostekoski
2012 New Journal of Physics  
We theoretically analyze the experimental observations of a spectral line collapse in a metamaterial array of asymmetric split ring resonators [Fedotov et al., Phys. Rev. Lett. 104, 223901 (2010)]. We show that the ensemble of closely-spaced resonators exhibits cooperative response, explaining the observed system-size dependent narrowing of the transmission resonance linewidth. We further show that this cooperative narrowing depends sensitively on the lattice spacing and that significantly
more » ... significantly stronger narrowing could be achieved in media with suppressed ohmic losses.
doi:10.1088/1367-2630/14/10/103003 fatcat:fikytdsravbqpp3c27hkb4m7qy