Domain wall type spatial light modulator

摘要

Problem to be solved: to provide a domain wall moving spatial light modulator capable of low current drive and improved aperture ratio.Light modulating sectionA first ferromagnetic exchange coupling portion and a second ferromagnetic exchange coupling portion disposed at both ends of the light modulating section and having different coercive forces to each otherMultiple domain wall moving optical modulatorsA domain wall shifting spatial light modulator comprisingA plurality of domain wall moving optical modulatorsThe first ferromagnetic exchange coupling portion and the second ferromagnetic exchange coupling portion are arranged side by side in a direction perpendicular to the predetermined direction and arranged alternately.On one end side of adjacent magnetic domain moving optical modulation elementsA first ferromagnetic layer (first magnetization fixed layer) of the first ferromagnetic exchange coupling portion and a connection portion for electrically connecting the first ferromagnetic layer (second magnetization fixed layer) of the second ferromagnetic exchange coupling portion are further provided.Diagram