A technique of recording information on the magnetooptical media. Writing is performed by reversing the polarization of the magnetic domain, while under the influence of an external magnetic field, by heating it above the compen sation point temperature with a short laser pulse. Reading is performed by measuring the Kerr effect, which rotates polarized light when it is reflected under the influence of a magnetic field.; 在磁光介質上記錄信息的一門技術。寫入 是用短的激光脈沖把磁化區(qū)加熱到高于補償點溫度,在外磁場作用下改變該區(qū)的磁化極性。 讀出是利用克爾效應原理來判斷。克爾效應是指在磁場作用下的反射偏振光的偏振面 會發(fā)生旋轉,其旋轉方向取決于磁場方向。