Optical switching of terahertz radiation from meta-atom-loaded photoconductive antennas

被引：24

作者：

Takano, Keisuke ^{[1
]}

Chiyoda, Yui ^{[1
]}

Nishida, Tsubasa ^{[2
]}

Miyamaru, Fumiaki ^{[2
]}

Kawabata, Taku ^{[1
]}

Sasaki, Hirofumi ^{[1
]}

Takeda, Mitsuo W. ^{[2
]}

Hangyo, Masanori ^{[1
]}

机构：

[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[2] Shinshu Univ, Fac Sci, Dept Phys, Nagano 3908621, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 16期

基金：

日本学术振兴会;

关键词：

dipole antennas; metamaterials; optical resonators; optical switches; photoconducting devices; METAMATERIALS; SPECTROSCOPY; DEVICES;

D O I：

10.1063/1.3654156

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical switching of the spectrum and polarization of terahertz radiation from split-ring resonator-loaded photoconductive antennas has been demonstrated. The switching is based on the sensitivity of the resonance of a split-ring resonator on a photoconductive substrate to a change in the capacitance induced by optical pulse irradiation. The spectral and polarization characteristics of the split-ring resonator-loaded photoconductive antennas are discussed in terms of the coupling between the electric dipole induced by the pump laser and the eigenmodes of the split-ring resonators. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3654156]

引用

页数：3

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