延时反馈半导体激光器双劈控制混沌方法研究

Control of chaos in a delayed feedback semiconductor laser via dual-wedges

提出延时反馈半导体激光器双劈控制混沌方法,建立有劈控制的激光动力学物理模型.通过调节激光器外腔光路中的光器件劈去控制反馈光光程,改变了反馈光的延时时间和反馈强度,在物理上实现了延时时间和反馈强度的双参数混沌控制.数值结果证明该方法可以控制激光混沌到周期态,能使激光器输出光脉冲平均功率增加.

A method of controlling chaos is presented via dual-wedges in a delayed feedback semiconductor laser. The physical model of the laser dynamics is set up under the condition of the dual-wedges control. The optical-length of the transmission of feedback light in the external cavity can be governed by modulating the dual-wedges while the delay time and feedback intensity of the feedback light are varied. The dual-parameter chaos-control of the delay time and feedback intensity can be physically realized. The chaotic laser can be controlled in periodic states and its mean pulse power increased, as shown by numerical simulations.