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Method Draws Near-Perfect Efficiency Out of Spin Hall Effect

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POSTECH and KAIST researchers developed a method for achieving near-unity efficiency of the spin Hall effect of light (SHEL). The collaborators used an artificially designed metasurface capable of transmitting most light of one polarization — near-unity transmission — and reflecting light from the other. The method and the effect it delivered would improve microscopic optical device performance and effectiveness, including beamsplitters and optical switches. SHEL refers to a transverse and spin-dependent shift of light to the plane of incidence where it is reflected or...Read full article

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