Direct modulation of excited state quantum dot lasers
Direct modulation of excited state quantum dot lasers
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DOI：
10.1063/1.3193664
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发表时间：
2009-08
影响因子：
4
通讯作者：
B. Stevens;D. Childs;H. Shahid;R. Hogg
中科院分区：
文献类型：
--
作者：
B. Stevens;D. Childs;H. Shahid;R. Hogg
提出并论证了利用激发态量子点激光器进行高速直接调制。利用来自相同激光材料的基态和激发态的激光的直接比较揭示了K因子限制带宽的两倍增加。这是由于与基态相比，激发态的饱和增益增加并且载流子散射时间减少。
The use of the excited state quantum dot lasers for high speed direct modulation is proposed and demonstrated. A direct comparison of lasers utilizing the ground state and excited state from the same laser material reveals a factor of two increase in the K-factor limited bandwidth. This is attributed to an increase in the saturated gain and reduced carrier scattering time of the excited state compared to the ground state.