用延时反馈抑制半导体激光器中噪声引起的强度脉动
Suppressing noise-induced intensity pulsations in semiconductor lasers by means of time-delayed feedback
摘要：
本文研究了用延时反馈控制方法抑制半导体激光器中噪声引起的强度脉动（弛豫振荡）的可能性。这个想法是第一次研究在一个通用的正常形式模型，在那里我们推导出的平均振幅的振荡的解析表达式，并证明它可以通过改变延迟时间强烈调制。然后，我们调查的控制方案分析和数值计算的激光模型的郎小林型，并表明，由噪声激发的弛豫振荡可以非常有效地抑制通过反馈从法布里-珀罗谐振器。
英文摘要：
We investigate the possibility to suppress noise-induced intensity pulsations (relaxation oscillations) in semiconductor lasers by means of a time-delayed feedback control scheme. This idea is first studied in a generic normal form model, where we derive an analytic expression for the mean amplitude of the oscillations and demonstrate that it can be strongly modulated by varying the delay time. We then investigate the control scheme analytically and numerically in a laser model of Lang-Kobayashi type and show that relaxation oscillations excited by noise can be very efficiently suppressed via feedback from a Fabry-Perot resonator.
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