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利用开放的 V型系统密度矩阵运动方程组的零级稳态解 ,从定性分析和数值计算两个方面讨论了导致无反转激光的途径。研究结果表明 :系统可以通 pitchfork分岔和 Hopf分岔两种失稳机制产生无反转激光 ;激光腔损失、非饱和激光跃迁增益、原子退出速率和注入速率的变化对无反转激光的产生有明显的影响。
Using the zero-order steady-state solution of open V-system density matrix equations of motion, the ways of non-reversing laser are discussed from two aspects of qualitative analysis and numerical calculation. The results show that the system can generate non-reversing laser by two kinds of instability mechanisms, such as the pitchfork bifurcation and the Hopf bifurcation. The laser cavity loss, the gain of the unsaturated laser transition, the exiting rate and the rate of the atom exit have no effect on the non- Have a clear impact.