Optical switching of terahertz radiation from meta-atom-loaded photoconductive antennas
Optical switching of terahertz radiation from meta-atom-loaded photoconductive antennas
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DOI：
10.1063/1.3654156
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发表时间：
2011-10
影响因子：
4
通讯作者：
K. Takano;Y. Chiyoda;T. Nishida;F. Miyamaru;T. Kawabata;Hirofumi Sasaki;M. Takeda;M. Hangyo
中科院分区：
文献类型：
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作者：
K. Takano;Y. Chiyoda;T. Nishida;F. Miyamaru;T. Kawabata;Hirofumi Sasaki;M. Takeda;M. Hangyo
研究了开口环谐振器加载光电导天线对太赫兹辐射光谱和偏振态的光开关效应。开关是基于一个开口环谐振器的光电导基板上的光脉冲照射引起的电容的变化的谐振的灵敏度。从抽运激光诱导的电偶极子与开口环谐振腔本征模之间的耦合角度讨论了开口环谐振腔加载光导天线的光谱和偏振特性。
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.