Switchable polarization rotation of visible light using a plasmonic metasurface
Stuart K Earl, Timothy D James, Daniel E Gomez, Robert E Marvel, Richard F Haglund, Ann Roberts
APL Photonics | AMER INST PHYSICS | Published : 2017
A metasurface comprising an array of silver nanorods supported by a thin film of the phase change material vanadium dioxide is used to rotate the primary polarization axis of visible light at a pre-determined wavelength. The dimensions of the rods were selected such that, across the two phases of vanadium dioxide, the two lateral localized plasmon resonances (in the plane of the metasurface) occur at the same wavelength. Illumination with linearly polarized light at 45° to the principal axes of the rod metasurface enables excitation of both of these resonances. Modulating the phase of the underlying substrate, we show that it is possible to reversibly switch which axis of the metasurface is ..View full abstract
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Awarded by Australian Research Council
Awarded by National Science Foundation
The authors would like to acknowledge the financial support of the Australian Research Council (Project Nos. FT140100514, DP110100221, and DP110101767), the Defence Science Institute, a Vanderbilt University/University of Melbourne collaboration grant, and a Melbourne Centre for Nanofabrication Technical Fellowship. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian Fabrication Facility (ANFF). R.E.M. and R.F.H. acknowledge support of this work from the National Science Foundation (Grant No. DMR-1207507) and from Vanderbilt University, office of the Vice Provost for Research.