Chinese Optics Letters, 2008, 6 (6): 411, Published Online: Jun. 10, 2008
Enhanced spontaneous emission factor for microcavity lasers Download: 614次
激光器 微腔 自发辐射 速率方程 140.0140 Lasers and laser optics 140.5960 Semiconductor lasers 140.3430 Laser theory
Abstract
The microcavity and the influence of nonradiative recombination can control spontaneous emission. An analytic resolution of rate equation is studied for microcavity lasers. The relationship between output properties and structural parameters of multi-quantum wells (MQWs) is obtained. One of the most important consequences of the increased spontaneous emission factor is the reduction of laser threshold. It is found that the characteristic curve of a “thresholdless" laser is strongly nonradiative depopulation-dependent. The light output is increased by the enhanced well number and the reduced width. In particular, there is an optimal well number corresponding to the lowest threshold current density for MQW structure in the microcavity lasers.
Xiaoxia Zhang, Wei Pan. Enhanced spontaneous emission factor for microcavity lasers[J]. Chinese Optics Letters, 2008, 6(6): 411.