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Issue 36, 2019
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A spin controlled wavefront shaping metasurface with low dispersion in visible frequencies

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Abstract

Similar to amplitude and phase, optical spin plays an important and non-trivial role in optics, which has been widely demonstrated in wavefront engineering, creation of new optical components, and sensitive optical metrology. In this work, we propose and experimentally demonstrate a new type of spin controlled wavefront shaping metasurface. The proposed geometric phase metasurface is designed by employing the integrated and interleaved structures to independently control the left-handed and right-handed spin components. As an exemplary demonstration, our experimental results show that such a composite metasurface can convert a plane wave into a vortex beam and a Hermite beam for left-handed and right-handed polarized light, respectively. Because such a metasurface is made from non-resonant dielectric structures, it can work for broadband frequencies with very low dispersion. The proposed metasurface is fabricated by the laser writing method inside transparent glass with a low cost, which avoids the typical high-resolution lithography process. This spin dependent broadband wavefront shaping metasurface may find potential applications in optical communications, information processing, and optical metrology.

Graphical abstract: A spin controlled wavefront shaping metasurface with low dispersion in visible frequencies

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Publication details

The article was received on 26 Apr 2019, accepted on 16 Aug 2019 and first published on 16 Aug 2019


Article type: Paper
DOI: 10.1039/C9NR03566D
Nanoscale, 2019,11, 17111-17119

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    A spin controlled wavefront shaping metasurface with low dispersion in visible frequencies

    J. Zhou, H. Qian, H. Luo, S. Wen and Z. Liu, Nanoscale, 2019, 11, 17111
    DOI: 10.1039/C9NR03566D

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