固体激光腔动力学稳定性的调控  

Control on dynamical stablity of solid laser resonator

作　　者：张光寅[1] 张潮波[1] 丁欣[1] 宋峰[1] 郭曙光[1] 孟凡臻[1] 

机构地区：[1]南开大学光子学中心,天津300071

出　　处：《物理学报》2002年第2期253-258,共6页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :6 0 0 780 14 );天津市自然科学基金 (批准号 :99380 111);天津市光电子联合科学中心 (批准号 :2 0 0 0 2 0 )资助的课题~~

摘　　要：在固体激光腔运行中热透镜的屈光度 ,1 ft,作为谐振腔的动力学因子 ,对腔的运行特性有着关键性的影响作用 .运用变换圆图解方法 ,对固体激光腔的光模特性的动力学稳定性作了详细的分析 ,给出了它对动力学因子及腔参数u1 =L1 (L1 -R1 ) R1 与u2 =L2 (L2 -R2 ) R2 的依赖关系 .给出了腔参数u1 与u2 的直观物理图像描述 ;在此基础上 ,利用变换圆图解方法 ,进一步讨论 ,如何选择腔参数u1 与u2 ,调节稳定区内运行的最小基模光斑尺寸和动力学稳定区的宽度 ,及调控动力学稳定区的‘位置’ ;提出了两倍拓宽动力学稳定区的一个可行方案 ;最后 ,还讨论了动力学敏感腔的存在及其在自调Q激光器与自Kerr透镜锁模激光器中的可能运用 .In a solid laser resonator the dioptric strength of the thermal focusing lens, 1/f t, as a dynamic factor of the resonator, has great influence on the operation characters of the resonator. We have analyzed the dynamic stability of mode property of the solid laser resonator in detail with the transformation-circle diagrammatic approach. The relations of the dynamic stability with the dynamic factor and the resonator parameters u 1=L 1(L 1-R 1)/R 1 and u 2=L 2(L 2-R 2)/R 2 has been put forward. In this paper we offer the visible physics pictures of u 1 and u 2. How to choose u 1 and u 2, to adjust the minimum spot size of TEM 00 mode running in stable area and the width of the stable area, and the ‘position' of the dynamic stable area are discussed. A feasible design on doubling the width of the dynamic stable area is put forward. Finally, we have discussed the existence of the sensitive dynamic resonator and the possibilities of applying it to self Q-switched lasers and self Kerr-lens mode-locked lasers.

关 键 词：固体激光器 热透镜 动力学稳定性 调控 固体激光腔 光模特性 动力学因子 

分 类 号：TN241[电子电信—物理电子学]