Random-phase metasurfaces at optical wavelengths
| العنوان: | Random-phase metasurfaces at optical wavelengths |
|---|---|
| المؤلفون: | Yiting Chen, Fei Ding, Ilya P. Radko, Anders Pors, Sergey I. Bozhevolnyi |
| المصدر: | Scientific Reports Pors, A L, Ding, F, Chen, Y, Radko, I & Bozhevolnyi, S I 2016, ' Random-phase metasurfaces at optical wavelengths ', Scientific Reports, vol. 6, 28448 . https://doi.org/10.1038/srep28448 Pors, A, Ding, F, Chen, Y, Radko, I & Bozhevolnyi, S I 2016, ' Random-phase metasurfaces at optical wavelengths ', Scientific Reports, vol. 6, 28448 . https://doi.org/10.1038/srep28448 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Physics, Multidisciplinary, business.industry, Scattering, Gold film, Phase (waves), Plane wave, Physics::Optics, Reflector (antenna), 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Article, 010309 optics, Wavelength, Optics, 0103 physical sciences, Microscopy, 0210 nano-technology, business, Plasmon |
| الوصف: | Random-phase metasurfaces, in which the constituents scatter light with random phases, have the property that an incident plane wave will diffusely scatter, hereby leading to a complex far-field response that is most suitably described by statistical means. In this work, we present and exemplify the statistical description of the far-field response, particularly highlighting how the response for polarised and unpolarised light might be alike or different depending on the correlation of scattering phases for two orthogonal polarisations. By utilizing gap plasmon-based metasurfaces, consisting of an optically thick gold film overlaid by a subwavelength thin glass spacer and an array of gold nanobricks, we design and realize random-phase metasurfaces at a wavelength of 800 nm. Optical characterisation of the fabricated samples convincingly demonstrates the diffuse scattering of reflected light, with statistics obeying the theoretical predictions. We foresee the use of random-phase metasurfaces for camouflage applications and as high-quality reference structures in dark-field microscopy, while the control of the statistics for polarised and unpolarised light might find usage in security applications. Finally, by incorporating a certain correlation between scattering by neighbouring metasurface constituents new types of functionalities can be realised, such as a Lambertian reflector. |
| وصف الملف: | application/pdf |
| تدمد: | 2045-2322 |
| DOI: | 10.1038/srep28448 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0df6b40bc95cf6d2b9e216d6a773f3b https://doi.org/10.1038/srep28448 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....c0df6b40bc95cf6d2b9e216d6a773f3b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
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| DOI: | 10.1038/srep28448 |