作　　者： ; ; ;

机构地区： 清华大学信息科学技术学院电子工程系

出　　处： 《光电技术应用》 2004年第6期6-8,49,共4页

摘　　要： 根据四能级系统的速率方程,推导了四能级调Q激光器在储能期间,反转集居数随泵浦持续时间的变化关系,并指出有效储能时间并非上能级寿命,而是一个由上能级寿命和工作物质对泵浦的受激吸收共同决定的物理量.提出了关于有效储能时间的两个推论1.有效储能时间小于上能级寿命;2.提高泵浦强度,则有效储能时间减小.通过实验验证了两个推论. Inversion density as a function of pump duration is derived according to the rate equation of inversion density for four-level system during the energy storage period. The deduction indicates that the effective energy storage time is not equal to the upper state lifetime but a parameter determined by both the upper state lifetime and the absorption of the pump beam by the active medium. It also indicates that the effective energy storage time is less than the upper state lifetime and the effective energy storage time will be diminished if the pump density is increased. Analysis of the experiment result agree with the estimation and the theory is thus proved.

关 键 词： 调 有效储能时间

领　　域： [电子电信]