Towards stimulated generation of coherent plasmons in nanostructures.
A possible generation scheme for growing coherent plasma oscillations ~plasma instability! is presented. Specific quantum well structures, where a sufficient population inversion can be maintained in the carrier distribution by appropriate injection-extraction configurations, form the basis of this scheme. Self-consistent random phase approximation calculations show that a population inversion, leading to a plasma instability, can occur in such structures. A comparison between the calculated and the observed differential conductance curves suggests that such quantum well structures could be designed as active regions for the generation of terahertz frequency radiation sources.
|Main Author:||Kempa, K.|
|Other Authors:||Bakshi, P., Du, C., Feng, G., Scorupsky, A.|