THz Waves Scattering by Finite Graphene Strip Grating Embedded Into Dielectric Slab

被引：10

作者：

Kaliberda, Mstislav E. ^{[1
]}

Lytvynenko, Leonid M. ^{[2
]}

Pogarsky, Sergey A. ^{[1
]}

机构：

[1] Kharkov Natl Univ, Sch Radio Phys, UA-61022 Kharkov, Ukraine

[2] Natl Acad Sci Ukraine, Inst Radio Astron, UA-61002 Kharkov, Ukraine

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 2020年 / 56卷 / 01期

关键词：

Graphene strip grating; integral equation; regularization procedure; resonance; NUMERICAL-ANALYSIS; ABSORBER; RANGE;

D O I：

10.1109/JQE.2019.2950679

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We consider the scattering and absorption of plane H-polarized wave by finite number of graphene strips placed inside a dielectric slab, in the THz range. The problem is reduced to the singular integral equation. Here we obtain two types of singular integrals: Cauchy principal value integral and integral with poles. To eliminate the poles we present the regularization procedure. The theoretically guaranteed convergent Nystrom-type method is used for discretization. Results for the total scattering and absorption cross sections and the near field patterns are presented. We pay special attention to plasmon and grating- mode resonances, as well as excitation of eigenwaves of dielectric slab. These waves carry energy of the incident field along the dielectric slab. Dramatic growth in the power is observed at the grating-mode resonance frequencies.

引用

页数：7

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