| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetooptical type spatial light modulator which is improved in selectivity with respect to pixels. <P>SOLUTION: A spatial light modulator 10 is configured such that a plurality of pixels 4 arrayed on a substrate 7 each includes a magnetic thin line 1 formed by forming a magnetooptical material in a thin-line shape, and a magnetic transfer film 5 is provided on the substrate 7 while being in contact with an undersurface of the magnetic thin line 1; a magnetic wall DW between two magnetic domains D0, D1 moves in a thin-line direction with currents supplied by a pair of electrodes 2, 3 connected to both ends of the magnetic thin line 1, and one of the magnetic domains D0, D1 is selectively made to reach an incidence region 1r of light, thereby inverting a magnetization direction of the incidence region 1r. The magnetization direction of the magnetic thin line 1 is transferred to the magnetic transfer film 5, so the magnetic transfer film 5 right below the incidence region 1r is inverted in magnetization direction together with the magnetic thin line 1. Light which is transmitted through the substrate 7 to be made incident optically rotates large through Faraday effect when transmitted through the magnetic transfer film 5, is reflected by the magnetic thin line 1, and optically rotates to exit when transmitted through the magnetic transfer film 5 again. <P>COPYRIGHT: (C)2012,JPO&INPIT |
