Many parameters are required to describe their performance, which is transmission ratio, extinctivity ratio, angle of view field, splitting angle, etc.

激镜技术参数较多，透射、消、视场角、分束角、长度孔径等。

The magnetooptic self-nulled ellipsometer,with ac Farady magnetooptic modulating and phase locking to detect nulled point,has the high abilities of prevent interference and angular recognize.

磁调制锁相椭仪采用交流法拉第磁调制及相来测消点,具有抗干扰能力强,角分辨能力高等优点。