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法拉第磁光调制及相敏检波来检测消光,具有抗干扰能力强,角分辨能力高等优。