光注入量子级联振荡器中的高度均匀尖峰序列
Radically Uniform Spike Trains in Optically Injected Quantum Cascade Oscillators
AI总结：
本文通过实验与理论分析，揭示了光注入量子级联激光器因增益介质具有约一皮秒的超短载流子寿命，能够产生高度均匀的尖峰序列，克服了传统半导体激光器中噪声诱发尖峰幅度不均匀的问题。
摘要：
研究发现，量子阱和量子点半导体激光系统中噪声诱导的兴奋性通常会产生幅度不均匀的尖峰模式。在本快报中，我们通过实验记录到，注入单色激光的带间子带量子级联激光器在时域中展现出一系列高度均匀的尖峰序列。理论分析表明，这种高度均匀性源于量子级联激光器增益介质的超短载流子寿命，该寿命通常接近一皮秒。
英文摘要：
It has been found that noise-induced excitability in quantum well and quantum dot semiconductor laser systems usually produces spike patterns of non-uniform amplitude. In this letter, we experimentally record that an inter-subband quantum cascade laser injected with a monochromatic laser exhibits a series of highly-uniform spike trains in the time domain. Theoretical analysis demonstrates that such high uniformity has its origin in the ultrashort carrier lifetime of the quantum cascade laser gain medium that is typically close to one picosecond.
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