Frequency tunable near-infrared metamaterials based on VO2 phase transition

被引：487

作者：

Dicken, Matthew J. ^{[1
]}

Aydin, Koray ^{[1
]}

Pryce, Imogen M. ^{[1
]}

Sweatlock, Luke A. ^{[2
]}

Boyd, Elizabeth M. ^{[1
]}

Walavalkar, Sameer ^{[1
]}

Ma, James ^{[2
]}

Atwater, Harry A. ^{[1
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Northrop Grumman Aerosp Syst, Redondo Beach, CA USA

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 20期

基金：

美国国家科学基金会;

关键词：

NEGATIVE-INDEX; INSULATOR-TRANSITION; MAGNETIC RESPONSE; MOTT TRANSITION; REFRACTION;

D O I：

10.1364/OE.17.018330

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Engineering metamaterials with tunable resonances from mid-infrared to near-infrared wavelengths could have far-reaching consequences for chip based optical devices, active filters, modulators, and sensors. Utilizing the metal-insulator phase transition in vanadium oxide (VO2), we demonstrate frequency-tunable metamaterials in the near-IR range, from 1.5-5 microns. Arrays of Ag split ring resonators (SRRs) are patterned with e-beam lithography onto planar VO2 and etched via reactive ion etching to yield Ag/VO2 hybrid SRRs. FTIR reflection data and FDTD simulation results show the resonant peak position red shifts upon heating above the phase transition temperature. We also show that, by including coupling elements in the design of these hybrid Ag/VO2 bi-layer structures, we can achieve resonant peak position tuning of up to 110 nm. (C) 2009 Optical Society of America

引用

页码：18330 / 18339

页数：10

共 29 条

[21] Negative index of refraction in optical metamaterials [J].