Fabrication of planar metamaterials with sharp and strong electromagnetically induced transparency-like characteristics at wavelengths around 820 nm
Fabrication of planar metamaterials with sharp and strong electromagnetically induced transparency-like characteristics at wavelengths around 820 nm
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DOI：
10.1364/josab.31.001000
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发表时间：
2014-05-01
影响因子：
1.9
通讯作者：
Hane, Kazuhiro
中科院分区：
文献类型：
--
作者：
Hokari, Ryohei;Kanamori, Yoshiaki;Hane, Kazuhiro
制造具有类似电磁感应透明（EIT）特征、具有尖锐且强光谱响应的等离子体超材料对于近红外波长的器件应用来说是一项具有挑战性的任务。实验研究了由偶极谐振器和四极谐振器组成的银超材料中的类EIT效应，并对其特性进行了评价。超材料的光学特性可以通过两个谐振腔之间的差距距离来控制。在820 nm附近的波长处，对于间隙距离在13 nm和69 nm之间的超材料，观察到透射率在72%和28%之间的EIT样效应。在13 nm的间隙处，实现了2.29的最大调制深度。(C)2014年美国光学学会
Fabrication of plasmonic metamaterials having electromagnetically induced transparency (EIT)-like characteristics with sharp and strong spectral responses is a challenging task for device applications at near-infrared wavelengths. EIT-like effects in silver metamaterials consisting of dipole resonators and quadrupole resonators were experimentally demonstrated, and their characteristics were evaluated. Optical characteristics of the metamaterials could be controlled by the gap distance between the two resonators. At wavelengths around 820 nm, EIT-like effects with transmittance between 72% and 28% were observed for the metamaterials with gap distances between 13 and 69 nm. At a gap of 13 nm, a maximum modulation depth of 2.29 was achieved. (C) 2014 Optical Society of America