Self-consistent calculation of metamaterials with gain

By A. Fang, Thomas Koschny, M. Wegener, Costas M. Soukoulis. 2009

140 citations recorded by the source corpus.

We present a computational scheme allowing for a self-consistent treatment of a dispersive metallic photonic metamaterial coupled to a gain material incorporated into the nanostructure. The gain is described by a generic four-level system. A critical pumping rate exists for compensating the loss of the metamaterial. Nonlinearities arise due to gain depletion beyond a certain critical strength of a test field. Transmission, reflection, and absorption data as well as the retrieved effective parameters are presented for a lattice of resonant square cylinders embedded in layers of gain material and split ring resonators with gain material embedded into the gaps.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/c8acb45ca3f6ac2db818218a835aeb26044d9d4c

Citations in the corpus

• Quad-Band Terahertz Metamaterial Absorber Based on the Combining of the Dipole and Quadrupole Resonances of Two SRRs (2017, unknown): “terials [11]–[13] and employ the low-less materials [14]–[16] to compensate or reduce the losses of the metamaterials have been”