کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5449388 | 1512529 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-efficiency and multi-frequency polarization converters based on graphene metasurface with twisting double L-shaped unit structure array
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: High-efficiency and multi-frequency polarization converters based on graphene metasurface with twisting double L-shaped unit structure array High-efficiency and multi-frequency polarization converters based on graphene metasurface with twisting double L-shaped unit structure array](/preview/png/5449388.png)
چکیده انگلیسی
In this work, a high-efficiency and tunable dual-frequency reflective polarization converter composed of graphene metasurface with twisting double L-shaped unit is firstly realized. Numerical results demonstrate that the device can convert a linearly polarized wave to its cross-polarized wave, and meantime it can also convert to a circularly polarized wave. Subsequently, one thickness of 500Â nm SiO2 layer sandwiched by two graphene metasurfaces with similar pattern is stacked on the top of the two-layered structure, a four-frequency efficient reflective polarization converters is realized. Above all, those working frequencies can also be dynamically tuned within a large frequency range by adjusting the Fermi energy of the graphene, without reoptimizing and refabricating the nanostructures, which paves a novel way toward developing a controllable polarization converter for mid-infrared applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 394, 1 July 2017, Pages 50-55
Journal: Optics Communications - Volume 394, 1 July 2017, Pages 50-55
نویسندگان
Ming Chen, Xiaofei Xiao, Linzi Chang, Congyun Wang, Deping Zhao,