Slowing down terahertz waves with tunable group velocities in a broad frequency range by surface magneto plasmons

被引：41

作者：

Hu, Bin ^{[1
]}

Wang, Qi Jie ^{[1
,2
]}

Zhang, Ying ^{[3
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Div Microelect, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[3] Singapore Inst Mfg Technol, Singapore 638075, Singapore

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 09期

关键词：

THZ RADIATION; TRANSMISSION; LIGHT; MAGNETOPLASMONS;

D O I：

10.1364/OE.20.010071

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper proposes one broadly tunable terahertz (THz) slow-light system in a semiconductor-insulator-semiconductor structure. Subject to an external magnetic field, the structure supports in total two surface magneto plasmons (SMPs) bands above and below the surface plasma frequency, respectively. Both the SMPs bands can be tuned by the external magnetic field. Numerical studies show that leveraging on the two tunable bands, the frequency and the group velocity of the slowed-down THz wave can be widely tuned from 0.3 THz to 10 THz and from 1 c to 10(-6) c, respectively, when the external magnetic field increases up to 6 Tesla. The proposed method based on the two SMPs bands can be widely used for many other plasmonic devices. (C) 2012 Optical Society of America

引用

页码：10071 / 10076

页数：6

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