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    • 5. 发明专利
    • Optical modulation elements and the spatial light modulator
    • JP5054639B2
    • 2012-10-24
    • JP2008223067
    • 2008-09-01
    • 日本放送協会
    • 淳 久我泰敬 宮本紀一 河村直樹 清水賢司 町田信彦 船橋賢一 青島
    • G02F1/09
    • PROBLEM TO BE SOLVED: To provide an optical modulating element, having high response speed and capable of performing optical modulation of high definition, by micronizing pixels and preventing variation of operation caused by deterioration in magnetic characteristics of a magnetization fixation layer by thermal treatment in an element manufacturing process, and to provide an optical modulator that uses the optical modulation element. SOLUTION: In the optical modulating element having a spin injection magnetization inversion element part wherein the magnetization fixation layer, a non-magnetic intermediate layer and a magnetization inversion layer are laminated, in this order, and a pair of electrodes sandwiching the spin injection magnetization inversion element part and changing a rotational angle of a polarization surface of reflection light or transmission light to a polarization surface of light, made incident on the magnetization inversion layer, according to the change of a magnetization state in the magnetization inversion layer; and, at least one electrode of the pair of electrodes is formed, by using Cu and a defense layer made of metal is provided between the electrode formed by using Cu and the spin injection optical modulation element part. COPYRIGHT: (C)2010,JPO&INPIT