Spontaneous emission enhancement of quantum dots in a photonic crystal wire |
| |
Authors: | Viasnoff-Schwoob E Weisbuch C Benisty H Olivier S Varoutsis S Robert-Philip I Houdré R Smith C J M |
| |
Affiliation: | Laboratoire PMC, Ecole Polytechnique, 91128 Palaiseau, France. |
| |
Abstract: | Photonic wires are the simplest extended low-dimensional systems. Photonic crystal confinement confers them a divergent density of states at zero-group-velocity points, which leads to enhancement of spontaneous emission rates [D. Kleppner, Phys. Rev. Lett. 47, 233 (1981)10.1103/Phys. Rev. Lett. 47.233]. We experimentally evidence, for the first time, the spectral signature of these Purcell factor singularities, using the out-of-plane emission of InAs quantum dots buried in GaAs/AlGaAs based photonic crystal based wire. Additionally, in-plane collection at the wire exit shows large enhancements of the signal at some of the density of states singularities. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|