Modelling of temperature effects on the characteristics of mid-infrared quantum cascade lasers
Modelling of temperature effects on the characteristics of mid-infrared quantum cascade lasers
复制标题
温度对中红外量子级联激光器特性影响的建模
DOI：
10.1016/j.optcom.2008.07.036
复制
发表时间：
2008
影响因子：
2.4
通讯作者：
S. Lamari
中科院分区：
文献类型：
--
作者：
A. Hamadou;J. Thobel;S. Lamari
从理论上研究了温度对工作在中红外波段的量子级联激光器特性的影响，并与文献报道的实验结果进行了比较。计算了声子散射率、线宽变化和热电子寿命与温度的关系。研究发现，这种特性强烈地依赖于温度。我们的模型得到的阈值电流密度与实验符合得很好。同时考虑了注入效率对非饱和模式增益的影响。
The effect of temperature on the characteristics of GaAs/AlGaAs quantum cascade lasers operating in the mid-infrared range is theoretically investigated and compared with reported experimental results. We have included the dependence of the phonon scattering rate, linewidth variations and thermionic lifetime on temperature. It is found that the characteristics depend strongly on temperature. Our model yields threshold current densities in good agreement with the experiments. The effect of injection efficiency on the unsaturated modal gain is also considered.