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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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    Published: February 2021
    Glossary
    efficiency
    As applied to a device or machine, the ratio of total power input to the usable power output of the device.
    spin
    Acronym for self-aligned polysilicon interconnect N-channel. A metal-gate process that uses aluminum for the metal-oxide semiconductor (MOS) gate electrode as well as for signal and power supply connectors.
    transmission
    In optics, the conduction of radiant energy through a medium. Often denotes the percentage of energy passing through an element or system relative to the amount that entered. See transmission efficiency.
    Research & TechnologyLasersSHELspin Hall effectspin hall effect of lightKAISTPostechefficiencynear-unitymetasurfaceOpticsAsia-PacificincreasespintransmissionTech Pulse

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