用协同学的观点研究锁模激光脉冲的建立过程

Study of the building process of mode-locking laser pulse from the point of view of synergetics

该文用协同学的观点研究锁模激光脉冲的建立过程 ,认为锁模激光脉冲的建立过程是非线性的合作效应或者是自组织现象。从模式表象的激光方程出发 ,导出了锁模激光方程以及相应的福克 -普朗克方程 ,得到了锁模激光的第一阈值和第二阈值。最后讨论了锁模激光光束质量的最佳条件 ,即在 Dm≈ 1.5 Dthr.1时为获得高光束质量的锁模激光的最佳参数选择 。

In this paper, the building process of mode locking laser pulse is studied from the point of view of synergetics. It is shown that the building process of mode locking laser pulse is the nonlinear cooperative effect or self organization phenomena.Starting with laser equations in the mode picture, the mode locking laser equations and Fokker Planck equation have been derived. The first threshold and second threshold of mode locking laser have been found. Finally the optimum conditions in the beam quality of mode locking laser pulse have been discussed. A good agreement of the calculated data with experiments is reached.