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An ultra-thin beam splitter design using a-Si:H based on hhase gradient metasurfaces

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Show simple item record Ahmed, Hammad Ali, Muhammad Mahmood Ullah, Arif Rahim, Arbab Abdur Maab, Husnul Khan, Mahmood 2020-03-05T15:22:29Z 2020-03-05T15:22:29Z 2019
dc.description peer-reviewed en_US
dc.description.abstract This paper explicates the design of an ultra-thin beam splitter based on phase gradient metasurfaces using amorphous silicon hydrogenated (a-Si:H) nano cylinders for the visible frequency of 474 THz. The a-Si:H nano cylinders exhibit low losses in the visible regime compared to standard a-Si, and small size due to reduced aspect ratio compared to other highly efficient materials such as TiO2 and GaN. In the proposed design, incident wave at a single operating frequency of 474 THz in visible regime is split into two different directions according to the generalized Snell’s law of refraction. The angles of refracted waves are controlled by choosing different phase gradients. Based on this concept, three metasurfaces are designed and simulated using finite difference time domain numerical method for various split angles (31.8 , −31.8 , (−44.6 , 31.8 and (−44.6 , 20.5°) en_US
dc.language.iso eng en_US
dc.publisher American Scientific Publishers en_US
dc.relation.ispartofseries Journal of Nanoelectronics and Optoelectronics;14, pp. 1-5
dc.subject ultra-thin en_US
dc.subject beam splitter en_US
dc.subject phase gradient metasurfaces en_US
dc.subject dielectric materials en_US
dc.subject amorphous silicon hydrogenated en_US
dc.title An ultra-thin beam splitter design using a-Si:H based on hhase gradient metasurfaces en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1166/jno.2019.2614
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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