The influence of the pumping mechanism for the dynamical properties of quantum dot amplifiers is investigated for 10, 40 and 160 GHz signals. A fast response is predicted in the case of optical pumping in the wetting layer (WL). The combination of fast relaxation and capture times and the presence of a reservoir of carriers in the WL opens up for the possibility of ultrafast gain recovery in QD devices. The strength of optical contra electrical pumping is that it reduces the bottleneck effect of a slow WL. Optical pumping thus allows significant improvement of the dynamical properties of QD devices.
|Title of host publication||Proceedings 27th European Conference on Optical Communication|
|Publication status||Published - 2001|
|Event||27th European Conference on Optical Communication - Amsterdam, Netherlands|
Duration: 30 Sep 2001 → 4 Oct 2001
Conference number: 27
|Conference||27th European Conference on Optical Communication|
|Period||30/09/2001 → 04/10/2001|