distant zone field strength meter

The influences of the disturbance of the parameters,such as L,R 1,R 2 ,on the output coupling and on the far field intensity of positive branch unstable confocal resonator are studied.

分析了共焦非稳谐振腔几何参数Ｌ，Ｒ１，Ｒ２的微小变化对输出耦合系数和远场强度的影响，并结合本校研制的ＨＤＩ型激光器的具体结构，得出一些有意义的结论。

Then the changes of near field phase and far field intensity, which were led to by the tilt of a single mirror and two mirrors with different deviated direction respectively, are computed and analysed by C 6 code.

首先用几何光学方法分析了虚共焦非稳腔腔镜倾斜引起的准直光线偏离光轴 ,形成偏斜光线的角度灵敏度和偏斜距离灵敏度同非稳腔放大率m和腔镜倾斜角 β之间的关系 ,然后用C 6程序计算、分析了柱面条状虚共焦非稳腔单镜、双镜反向和同向倾斜三种情况下不同倾斜角对近场相位和远场强度的影响。