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在开放的共振Lower ladder型和V型系统中 ,无激光解的失稳既可以通过Pitchfork分岔发生而导致连续无反转激光输出 ,也可以通过Hopf分岔实现而导致自脉动无反转激光输出。分析了非饱和增益系数、腔损耗速率、粒子注入速率比和粒子退出速率等系统参量的变化对两种失稳的影响。
In the open resonant Lower ladder and V-type systems, laser-induced instability can occur both by continuous and non-inverted laser output by Pitchfork bifurcation and by self-pulsating non-reversing laser light by Hopf bifurcation Output. The influences of the system parameters such as unsaturated gain coefficient, cavity loss rate, particle injection rate and particle exit velocity on the two kinds of instability are analyzed.