access icon free Vertically oriented metamaterial broadband linear polariser

Control and manipulation of polarisation is an important topic for imaging and light matter interactions. In the infrared regime, the large wavelengths make wire grid polarisers (WGPs) a viable option, as it is possible to create periodic arrays of metallic wires at that scale. The recent advent of metamaterials has spurred an increase in non-traditional polariser motifs centred around more complicated repeat units, which potentially provide more functionality. The authors explore the use of 2D arrays of single and back-to-back vertically oriented cross dipoles arranged in a cubic in-plane silicon matrix. They show that both single and back-to-back versions have higher rejection ratios and larger bandwidths than either WGPs or 2D arrays of linear dipoles.

Inspec keywords: optical arrays; optical polarisers; integrated optics; optical metamaterials; silicon; light polarisation; elemental semiconductors

Other keywords: linear dipoles; vertically oriented metamaterial broadband linear polariser; cubic in-plane silicon matrix; metallic wires; light matter interactions; nontraditional polariser motifs; complicated repeat units; periodic arrays; infrared regime; WGPs; wire grid polarisers

Subjects: Optical metamaterials; Integrated optics; Spatial filters, zone plates, and polarizers; Optical materials; Integrated optics; Other optical system components

http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.2433
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content/journals/10.1049/el.2017.2433
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