Signatures of Anderson localization excited by an optical frequency comb
Abstract
We investigate Anderson localization of light as occurring in ultrashort excitations. A theory based on time dependent coupled-mode equations predicts universal features in the spectrum of the transmitted pulse. In particular, the process of strong localization of light is shown to correspond to the formation of peaks in both the amplitude and in the group delay of the transmitted pulse. Parallel ab initio simulations made with finite-difference time-domain codes and molecular dynamics confirm theoretical predictions, while showing that there exists an optimal degree of disorder for the strong localization.
- Publication:
-
Physical Review B
- Pub Date:
- January 2010
- DOI:
- 10.1103/PhysRevB.81.014209
- arXiv:
- arXiv:1003.2555
- Bibcode:
- 2010PhRvB..81a4209G
- Keywords:
-
- 71.23.-k;
- 42.25.Fx;
- 82.70.Dd;
- Electronic structure of disordered solids;
- Diffraction and scattering;
- Colloids;
- Physics - Optics
- E-Print:
- 5 pages, 5 figures.