کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1535065 | 1512615 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tunable absorption in a dielectric-graphene-metal groove-grating absorber
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
We propose in this paper a dielectric-graphene-metal groove-grating absorber with a layer of graphene deposited between the metal and dielectric under the groove. The graphene layer is shown to influence the interference between the propagating modes in the grating grooves. Unlike traditional groove-grating, whose absorption spectrum could only be determined by structural parameters, the absorption spectrum of dielectric-graphene-metal groove-grating absorber could also be tuned by adjusting the applied voltage on graphene. With optimized geometric parameters and applied voltage, a high efficiency (>95%) absorptive spectrum with peak wavelength ranging from 1.2 μm to 1.5 μm could be realized. We also demonstrate a broad-band absorber which could achieve broad absorption (>85%) from 1.39 μm to 1.54 μm by biasing the graphene layers with various voltages.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 308, 1 November 2013, Pages 204-210
Journal: Optics Communications - Volume 308, 1 November 2013, Pages 204-210
نویسندگان
Bofeng Zhu, Guobin Ren, Siwen Zheng, Zhen Lin, Shuisheng Jian,