Theory of Pump-Probe Experiments of Metallic Metamaterials Coupled to a Gain Medium
| Title | Theory of Pump-Probe Experiments of Metallic Metamaterials Coupled to a Gain Medium |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Huang ZX, Koschny T, Soukoulis CM |
| Journal Title | Physical Review Letters |
| Volume | 108 |
| Pages | 187402 |
| Date Published | 05 |
| Type of Article | Article |
| ISBN Number | 0031-9007 |
| Accession Number | WOS:000303662300010 |
| Keywords | negative-index metamaterials |
| Abstract | We establish a new approach for pump-probe simulations of metallic metamaterials coupled to the gain materials. It is of vital importance to understand the mechanism of the coupling of metamaterials with the gain medium. Using a four-level gain system, we have studied light amplification of arrays of metallic split-ring resonators with a gain layer underneath. We find that the differential transmittance Delta T/T can be negative for split-ring resonators on the top of the gain substrate, which is not expected, and Delta T/T is positive for the gain substrate alone. These simulations agree with pump-probe experiments and can help to design new experiments to compensate for the losses of metamaterials. |
| URL | <Go to ISI>://WOS:000303662300010 |
| DOI | 10.1103/PhysRevLett.108.187402 |
| Alternate Journal | Phys. Rev. Lett. |
