Extremely confined terahertz surface plasmon-polaritons in graphene-metal structures

被引：77

作者：

Gu, Xuefeng ^{[1
]}

Lin, I-Tan ^{[1
]}

Liu, Jia-Ming ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 07期

关键词：

FIELD ENHANCEMENT; TECHNOLOGY;

D O I：

10.1063/1.4818660

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A deep subwavelength terahertz plasmonic waveguide based on graphene-metal hybrid structure is proposed. A broadband mode confinement down to 1/100 of the free-space wavelength lambda(0) with a loss of 0.6 dB/lambda(0) can be achieved when the intra-band electron relaxation time is 100 ps. We show that very narrow slits with an appropriate periodicity created in the metal layer can serve as a grating to efficiently excite the surface plasmon-polariton mode with a normally incident terahertz beam, which can be further exploited for investigation of both interesting physics and innovative applications. (C) 2013 AIP Publishing LLC.

引用

页数：4

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