Strong Purcell effect in anisotropic ɛ -near-zero metamaterials
Abstract
We theoretically demonstrate the strong Purcell effect in ɛ -near-zero ultra-anisotropic uniaxial metamaterials with an elliptic isofrequency surface. Contrary to the hyperbolic metamaterials, the effect does not rely on the diverging density of states and evanescent waves. As a result, both the radiative decay rate and the far-field emission power are enhanced. The effect can be realized in the periodic layered metal-dielectric nanostructures with a complex unit cell containing two different metallic layers.
- Publication:
-
Physical Review B
- Pub Date:
- May 2015
- DOI:
- 10.1103/PhysRevB.91.205126
- arXiv:
- arXiv:1408.2399
- Bibcode:
- 2015PhRvB..91t5126C
- Keywords:
-
- 78.67.Pt;
- 42.88.+h;
- 42.70.Qs;
- Multilayers;
- superlattices;
- Environmental and radiation effects on optical elements devices and systems;
- Photonic bandgap materials;
- Physics - Optics;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 4 pages, 3 figures