کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7925245 1512504 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly efficient birefringent quarter-wave plate based on all-dielectric metasurface and graphene
ترجمه فارسی عنوان
صفحات چهارم موج دو عاملی با کارآیی بالا بر اساس سطح متالورژی تمام دی الکتریک و گرافن
کلمات کلیدی
همه دی الکتریک، تشدید مغناطیسی، صفحه موج چهارم
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
All-dielectric metasurfaces offer remarkable properties including high efficiency and flexible control of the optical response. However, extreme, narrow bandwidth is a limitation that lowers applicability of these structures in photonic sensing applications. In this work, we numerically design and propose a switchable quarter-wave plate by hybridizing an all-dielectric metasurface with graphene. By using a single layer of graphene between a highly refractive index silicon and a silica substrate, the transmissive resonance is enhanced and broadened. Additionally, integrating graphene with silicon effectively modulates the Q-factor and the trapped magnetic modes in the silicon. A stable birefringence output is obtained and manipulated through the structure dimensions and the Fermi energy of graphene. A 95% polarization conversion ratio is achieved through converting linearly polarized light into circularly polarized light, and a 96% ellipticity ratio is obtained at the resonance wavelength. The structure is compact and has an ultrathin design thickness of 0.1λ, in the telecommunication region. The above properties are essential for integration into photonic sensing devices and the structure has potential for compatibility with the CMOS devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 419, 15 July 2018, Pages 114-119
نویسندگان
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