Electromagnetically induced transparency and absorption in metamaterials: The radiating two-oscillator model and its experimental confirmation
Artikel i vetenskaplig tidskrift, 2012

Several classical analogues of electromagnetically induced transparency in metamaterials have been demonstrated. A simple two-resonator model can describe their absorption spectrum qualitatively, but fails to provide information about the scattering properties-e.g., transmission and group delay. Here we develop an alternative model that rigorously includes the coupling of the radiative resonator to the external electromagnetic fields. This radiating two-oscillator model can describe both the absorption spectrum and the scattering parameters quantitatively. The model also predicts metamaterials with a narrow spectral feature in the absorption larger than the background absorption of the radiative element. This classical analogue of electromagnetically induced absorption is shown to occur when both the dissipative loss of the radiative resonator and the coupling strength are small. These predictions are subsequently demonstrated in experiments.

slow light

electromagnetically induced transparency

metamaterials

Författare

Philippe Tassin

Chalmers, Teknisk fysik, Kondenserade materiens teori

Lei Zhang

Rongkuo Zhao

Aditya Jain

Thomas Koschny

Costas M. Soukoulis

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 109 187401-

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Atom- och molekylfysik och optik

Annan elektroteknik och elektronik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevLett.109.187401