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Color-selective three-dimensional polarization structures 被引量:3

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摘要 Polarization as an important degree of freedom for light plays a key role in optics.Structured beams with controlled polarization profles have diverse applications,such as information encoding,display,medical and biological imaging,and manipulation of microparticles.However,conventional polarization optics can only realize two-dimensional polarization structures in a transverse plane.The emergent ultrathin optical devices consisting of planar nanostructures,so-called metasurfaces,have shown much promise for polarization manipulation.Here we propose and experimentally demonstrate color-selective three-dimensional(3D)polarization structures with a single metasurface.The geometric metasurfaces are designed based on color and phase multiplexing and polarization rotation,creating various 3D polarization knots.Remarkably,different 3D polarization knots in the same observation region can be achieved by controlling the incident wavelengths,providing unprecedented polarization control with color information in 3D space.Our research findings may be of interest to many practical applications such as vector beam generation,virtual reality,volumetric displays,security,and anti-counterfeiting.
出处 《Light(Science & Applications)》 SCIE EI CAS CSCD 2022年第11期2706-2715,共10页 光(科学与应用)(英文版)
基金 the Engineering and Physical Sciences Research Council(EP/P029892/1) the Leverhulme Trust(RPG-2021-145) the Royal Society International Exchanges(IES\R3\193046).
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