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|Title:||Broadband chirality-coded meta-aperture for photon-spin resolving||Authors:||Du, Luping
Kou, Shan Shan
Cadusch, Jasper J.
|Keywords:||Nanophotonics and Plasmonics
Nanoscience and Technology
DRNTU::Engineering::Electrical and electronic engineering
|Issue Date:||2015||Source:||Du, L., Kou, S. S., Balaur, E., Cadusch, J. J., Roberts, A., Abbey, B., . . . Lin, J. (2015). Broadband chirality-coded meta-aperture for photon-spin resolving. Nature Communications, 6, 10051-. doi:10.1038/ncomms10051||Series/Report no.:||Nature Communications||Abstract:||The behaviour of light transmitted through an individual subwavelength aperture becomes counterintuitive in the presence of surrounding ‘decoration’, a phenomenon known as the extraordinary optical transmission. Despite being polarization-sensitive, such an individual nano-aperture, however, often cannot differentiate between the two distinct spin-states of photons because of the loss of photon information on light-aperture interaction. This creates a ‘blind-spot’ for the aperture with respect to the helicity of chiral light. Here we report the development of a subwavelength aperture embedded with metasurfaces dubbed a ‘meta-aperture’, which breaks this spin degeneracy. By exploiting the phase-shaping capabilities of metasurfaces, we are able to create specific meta-apertures in which the pair of circularly polarized light spin-states produces opposite transmission spectra over a broad spectral range. The concept incorporating metasurfaces with nano-apertures provides a venue for exploring new physics on spin-aperture interaction and potentially has a broad range of applications in spin-optoelectronics and chiral sensing.||URI:||https://hdl.handle.net/10356/89069
|DOI:||10.1038/ncomms10051||Rights:||© The Author(s) (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||EEE Journal Articles|
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