Tunable optical antennas enabled by the phase transition in vanadium dioxide

被引：69

作者：

Earl, Stuart K. ^{[1
,2
]}

James, Timothy D. ^{[1
,2
]}

Davis, Timothy J. ^{[2
,3
]}

McCallum, Jeffrey C. ^{[1
]}

Marvel, Robert E. ^{[4
]}

Haglund, Richard F., Jr. ^{[5
]}

Roberts, Ann ^{[1
]}

机构：

[1] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[2] Australian Natl Fabricat Facil, MCN, Clayton, Vic 3168, Australia

[3] CSIRO Mat Sci & Engn, Clayton, Vic 3168, Australia

[4] Vanderbilt Univ, Interdisciplinary Mat Sci Program, Nashville, TN 37235 USA

[5] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37325 USA

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 22期

基金：

澳大利亚研究理事会; 美国国家科学基金会;

关键词：

SPECTROSCOPY; VO2;

D O I：

10.1364/OE.21.027503

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical antennas, subwavelength metallic structures resonating at visible frequencies, are a relatively new branch of antenna technology being applied in science, technology and medicine. Dynamically tuning the resonances of these antennas would increase their range of application and offer potential increases in plasmonic device efficiencies. Silver nanoantenna arrays were fabricated on a thin film of the phase change material vanadium dioxide (VO2) and the resonant wavelength of these arrays was modulated by increasing the temperature of the substrate above the critical temperature (approximately 68 degrees C). Depending on the array, wavelength modulation of up to 110 nm was observed. (C) 2013 Optical Society of America

引用

页码：27503 / 27508

页数：6

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