Thermal tunability in terahertz metamaterials fabricated on strontium titanate single-crystal substrates

被引：161

作者：

Singh, Ranjan ^{[1
]}

Azad, Abul K. ^{[1
]}

Jia, Q. X. ^{[1
]}

Taylor, Antoinette J. ^{[1
]}

Chen, Hou-Tong ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

来源：

OPTICS LETTERS | 2011年 / 36卷 / 07期

关键词：

D O I：

10.1364/OL.36.001230

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report an experimental demonstration of thermal tuning of resonance frequency in a planar terahertz metamaterial consisting of a gold split-ring resonator array fabricated on a bulk single-crystal strontium titanate (SrTiO3) substrate. Cooling the metamaterial starting from 409K down to 150K causes about a 43% shift in resonance frequency, and there is very little variation in resonance strength. The resonance shift is due to the temperature-dependent dielectric constant of the strontium titanate. The experiment opens up avenues for designing tunable terahertz devices by exploiting the temperature-sensitive characteristic of high dielectric constant substrates and complex metal oxide materials. (C) 2011 Optical Society of America

引用

页码：1230 / 1232

页数：3

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