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Cited 59 time in webofscience Cited 65 time in scopus
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Geometric metasurface enabling polarization independent beam splitting SCIE SCOPUS

Title
Geometric metasurface enabling polarization independent beam splitting
Authors
Yoon, GwanhoLee, DasolNam, KiTaeRho, Junsuk
Date Issued
2018-06
Publisher
NATURE PUBLISHING GROUP
Abstract
A polarization independent holographic beam splitter that generates equal-intensity beams based on geometric metasurface is demonstrated. Although conventional geometric metasurfaces have the advantages of working over a broad frequency range and having intuitive design principles, geometric metasurfaces have the limitation that they only work for circular polarization. In this work, Fourier holography is used to overcome this limitation. A perfect overlap resulting from the origin-symmetry of the encoded image enables polarization independent operation of geometric metasurfaces. The designed metasurface beam splitter is experimentally demonstrated by using hydrogenated amorphous silicon, and the device performs consistent beam splitting regardless of incident polarizations as well as wavelengths. Our device can be applied to generate equal-intensity beams for entangled photon light sources in quantum optics, and the design approach provides a way to develop ultra-thin broadband polarization independent components for modern optics.
URI
https://oasis.postech.ac.kr/handle/2014.oak/94293
DOI
10.1038/s41598-018-27876-2
ISSN
2045-2322
Article Type
Article
Citation
SCIENTIFIC REPORTS, vol. 8, no. 9468, 2018-06
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노준석RHO, JUNSUK
Dept of Mechanical Enginrg
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