Temporal Coupled Mode Theory for All-dielectric perfect absorbers

被引：1

作者：

Ming, Xianshun ^{[1
]}

Padilla, Willie J. ^{[2
]}

Sun, Liqun ^{[1
]}

Yang, Huaidong ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Precis Instruments, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

[2] Duke Univ, Dept Elect & Comp Engn, Box 90291, Durham, NC 27708 USA

来源：

2017 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY - MICRO/NANO PHOTONICS: MATERIALS AND DEVICES | 2017年 / 10622卷

关键词：

Dielectric metamaterials; Perfect absorption; Temporal coupled mode theory; Degenerate critical coupling; SILICON;

D O I：

10.1117/12.2288506

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Mechanism of the two-port one input mirror-symmetric all-dielectric disk array perfect absorbers is studied by temporal coupled mode theory. The perfect absorption is resulted from the degenerate critical coupling of EH111 and HEM modes of the dielectric disks. Analytical absorption with parameters extracted from eigenfrequency analysis matches well with that by Scattering parameter simulations, we also show that the asymmetric total field is due to the different symmetry of the two modes. The effect of the geometric parameters and material loss tangent is also investigated, which can guide the design of such all-dielectric perfect absorbers.

引用

页数：8

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