He-Ne激光器旁侧光谱强度与激光输出功率的关系  

The relationship between the side-axis intensity and the output power of He-Ne laser

作　　者：孙萍[1] 张仲秋[1] 汪华英[1] 王海燕[1] 

机构地区：[1]北京师范大学物理系,北京100875

出　　处：《大学物理》2003年第9期29-32,共4页College Physics

摘　　要：理论分析和实验结果都证明 :He -Ne激光器的旁侧光谱强度与激光输出功率有着密切的关系 .对于 3S2能级 ,有激光输出的粒子数少于无激光输出的粒子数 ,而对于 2P4 能级 ,有激光输出的粒子数多于无激光输出的粒子数 .对于 3S2 和 2P4 能级都有如下关系 :有无激光输出的粒子数差随激光输出功率单调变化 ,前者单调上升 ,后者单调下降 ;当激光输出功率增大到一定值时 ,粒子数差变化很小 .It is proved by theory and experiments that the side-axis intensity has close relations to the output power of He-Ne laser. First, with regard to the energy level of 3S 2, the particles in the situation with the output of laser are less than that without the output. However, with regard to the energy level of 2P 4, the result is opposite. Secondly, when the output power increases, the difference of numbers of particles between the two situations (ie, with and without the output of laser) increases for the energy level of 3S 2, but decreases for the energy level of 2P 4. Finally, when the output power gets to a particular value, the difference changes vary slowly. This conclusion is valid for both energy level of 3S 2 and 2P 4.

关 键 词：旁侧光谱 激光输出功率 

分 类 号：O433.1[机械工程—光学工程]