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.

磁光调制锁相椭偏仪采用交流法拉第磁光调制及相敏检波来检测消光,有干扰能力强,分辨能力高。