CO_2激光的偏振度与模式

The degree of polarization and model of a CO_2 laser

本文用一种简便方法,使CO_2激光通过一个可绕光轴旋转的布氏窗口,测定布氏窗口在不同转角下的激光反射及透射强度,从而可知该激光的偏振度。同时定性地研究了在不同放电电流下的输出激光模式与偏振度的关系。

The degree of polarization of a CO_2 laser can experimen- tally measured by using a Brewster window. Let the CO_2 laser pass through a ZnSe Brewster window which is rotated around the optical axis and measure the laser power density of reflection and reflection beam in different angles. By means of the experimental mesuring, the degree of polarization and model of CO_2 laser under the condition of discharge current can qualititatively obtained.