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Generation and Quenching of Intensity Pulsations in Semiconductor Lasers Coupled to External Cavities

机译:耦合到外部腔的半导体激光器中的强度脉动的产生和淬灭

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摘要

The behavior of self-pulsing and nonpulsing lasers coupled to external cavities is investigated experimentally and theoretically. We investigate the dependence of the pulsation characteristics on the external cavity length using a saturable absorber model for self-pulsing lasers. It was found that quenching of self-pulsation occurs only for a certain limited range of external cavity length, and the frequencies of external-cavity induced pulsations lies within a certain range determined by the coupling coefficient. Small-signal analysis allows these ranges to be derived analytically. Hitherto, complex pulsation phenomena can be explained very intuitively by interpreting the combined laser-external cavity system as a microwave oscillator with a limited gain band and discrete mode structure.
机译:实验和理论上研究了与外腔耦合的自脉冲和非脉冲激光器的行为。我们使用可饱和吸收器模型对自脉冲激光器研究了脉动特性对外腔长度的依赖性。已经发现,自脉动的猝灭仅在有限的外腔长度范围内发生,并且外腔引起的脉动的频率在由耦合系数确定的特定范围内。小信号分析允许通过分析得出这些范围。迄今为止,通过将组合的激光器-外部腔体系统解释为具有有限增益带和离散模式结构的微波振荡器,可以非常直观地解释复杂的脉动现象。

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