-
公开(公告)号：US3761155A
公开(公告)日：1973-09-25
申请号：US3761155D
申请日：1971-12-27
申请人： SPERRY RAND CORP
发明人： LO D , MANIKOWSKI D , HANSON M , KASKE A
CPC分类号： G11C13/042 , G11C13/06
摘要： A holographic memory system having an electrically alterable page composer or data mask and a method of modulating a plane polarized laser beam thereby for generating a hologram in the holographic storage medium is disclosed. The method utilizes as the data mask a planar platelet of magnetizable magneto-optic material in which a two-dimensional array of discrete saturated magnetic domains, each domain having its magnetization vector M aligned in a first or a second and opposite direction normal to the plane of the platelet, is selectively written. The magnetic domains produce a Faraday or Kerr effect rotation of the respectively associated plane polarized portions of the incident laser beam for generating a spatially varying rotation of the plane of polarization of such portions of the laser beam, the spatial distribution of which portions is a function of the spatially positioned magnetic domains.
摘要翻译： 公开了一种全息存储系统，其具有电可变页面组合器或数据掩模以及调制平面偏振激光束从而在全息存储介质中产生全息图的方法。 该方法利用可磁化磁光材料的平面小片作为数据掩模，其中离散饱和磁畴的二维阵列，每个畴具有其磁化矢量M在垂直于平面的第一或第二和相反方向对准 的血小板，被选择性地写入。 磁畴产生入射激光束的分别相关联的平面偏振部分的法拉第或克尔效应旋转，用于产生激光束的这些部分的偏振平面的空间上变化的旋转，其部分的空间分布是函数 的空间定位磁畴。
-
公开(公告)号：US3752563A
公开(公告)日：1973-08-14
申请号：US3752563D
申请日：1971-09-01
申请人： SPERRY RAND CORP
摘要： A magneto-optic light deflection system that utilizes the stripe domains in a magnetic film as a diffraction grating. The angle of deflection of the light from the plane of the film is varied in two dimensions by varying the separation and orientation of the stripe domains. The wall separation is varied by varying the intensity of a DC field in the plane of the film parallel to the stripe domains, or by varying the intensity of a DC field normal to the plane of the film. The orientation of the stripe domains is varied by varying the direction of the DC field in the film plane. Hysteresis is overcome by an AC tickle field perpendicular to the stripe domains.
摘要翻译： 利用磁性膜中的条带作为衍射光栅的磁光偏转系统。 通过改变条带域的分离和取向，光从膜平面偏转的角度在二维上变化。 通过改变平行于条状域的膜的平面中的DC场的强度或通过改变垂直于膜的平面的DC场的强度来改变壁分离。 通过改变膜平面中的DC场的方向来改变条带域的取向。 通过垂直于条带域的AC痒痒场来克服迟滞。
-
搜索结果
2 条记录 (耗时 0.012 秒)
