Modulated optical transmission of subwavelength hole arrays in metal-VO2 films

被引：67
|
作者：
Suh, JY [1 ]
Donev, EU
Lopez, R
Feldman, LC
Haglund, RF
机构：
[1] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
[2] Vanderbilt Univ, Inst Nanoscale Sci & Engn, Nashville, TN 37235 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 13期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2190463
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We demonstrate the modulation of the transmission of near-infrared light through a periodic array of subwavelength apertures in Ag-VO2 and Au-VO2 double-layer films using the semiconductor-to-metal phase transition in VO2. The transmitted intensity ratio increases by a factor of 8 as the VO2 goes from the semiconductor to the metal phase. We attribute this modulation to the switchable dielectric-permittivity contrast between the air-filled holes in the array and the surrounding VO2 material, a conjecture that is semiquantitatively confirmed by simulation.
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页数：3
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