Ultrastrong coupling of intersubband plasmons and terahertz metamaterials

被引：31

作者：

Dietze, D. ^{[1
,2
]}

Andrews, A. M. ^{[2
,3
]}

Klang, P. ^{[2
,3
]}

Strasser, G. ^{[2
,3
]}

Unterrainer, K. ^{[1
,2
]}

Darmo, J. ^{[1
,2
]}

机构：

[1] Vienna Univ Technol, Photon Inst, A-1040 Vienna, Austria

[2] Vienna Univ Technol, Ctr Micro & Nanostruct, A-1040 Vienna, Austria

[3] Vienna Univ Technol, Inst Solid State Elect, A-1040 Vienna, Austria

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 20期

基金：

奥地利科学基金会;

关键词：

D O I：

10.1063/1.4830092

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the ultrastrong-coupling between localized plasmons of a planar terahertz metamaterial and intersubband plasmons in a modulation doped quantum well sample. Such a system exhibits the formation of a lower and an upper polariton branch when the metamaterial eigenfrequency is tuned close to resonance with the intersubband transition. We achieve a normalized polariton splitting of 22% and a polaritonic gap of 2.4% of the intersubband transition frequency. In addition to the usual geometrical scaling, we demonstrate the effective tuning of the metamaterial resonance by dry etching with a tuning range of more than 1 THz. (C) 2013 AIP Publishing LLC.

引用

页数：5

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