Issue 36, 2019

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

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

Supplementary files

Article information

Article type
Paper
Submitted
26 Apr 2019
Accepted
16 Aug 2019
First published
16 Aug 2019

Nanoscale, 2019,11, 17111-17119

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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