利用无布氏窗He－Ne激光器获得光强稳定的线偏光的实验研究

Experiment study of a linearly polarized laser beam of stable intensity by using He-Ne gas laser without Brewster windows

利用ＯＥ双输出棱镜，定出了无布氏窗Ｈｅ－Ｎｅ激光器输出的两互相垂直的线偏光的方位角，当起偏镜透偏方向与两线偏光成４５°角时，即可获得光强稳定度与总光强相近的线偏光，方法简便，易行，值得参考。

In the experiment study,a bioutput OE prism is used to determine the directions of two perpendicular linear polarized laser beams from a He-Ne laser without Brewster windows. The results show that the intensity stability of the linear polarized laser beam can be much similar to the intensity stability of total laser beam if the prism is at an angle about 4 5 degree with two perpendicular linear polarized laser beams. In practical applications,the method is convenient,feasible,and worth considering.