Carbon-based terahertz devices
Carbon-based terahertz devices
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碳基太赫兹器件
DOI：
10.1117/12.2185159
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Kono, Junichiro
中科院分区：
文献类型：
--
作者：
Sadjadi, Firooz A.;Mahalanobis, Abhijit;He, Xiaowei;Gao, Weilu;Zhang, Qi;Ren, Lei;Kono, Junichiro
碳纳米管和石墨烯在太赫兹(THz)器件方面具有广阔的应用前景。在这里，我们总结了我们最近对这些材料在太赫兹区域的动态电导和光电子器件的研究。我们发现，单壁碳纳米管(SWCNTs)的THz响应主要是由沿纳米管的等离子体激元振荡引起的，这导致了极各向异性的THz电导。利用定向单壁碳纳米管薄膜中强烈的太赫兹等离子体激元共振及其显著的各向异性，我们构建了性能优良的太赫兹偏振器和室温下工作的偏振灵敏太赫兹探测器。此外，我们还研究了石墨烯样品在有无电栅的情况下的太赫兹电导。我们展示了石墨烯中表面等离子体激元的激发和主动控制，以及一种高调制深度、高调制速度和可设计的共振频率的石墨烯太赫兹调制器。
Carbon nanotubes and graphene are promising for diverse terahertz (THz) device applications. Here, we summarize our recent studies on the THz dynamic conductivities and optoelectronic devices of these materials in the THz region. We show that the THz response of single-wall carbon nanotubes (SWCNTs) is dominated by plasmon oscillations along the nanotubes, which lead to extremely anisotropic THz conductivities. By utilizing the strong THz plasmon resonance as well as its pronounced anisotropy in aligned SWCNT films, we built THz polarizers with perfect performance and polarization-sensitive THz detectors that work at room temperature. In addition, we studied the THz conductivities of graphene samples with and without electrical gating. We demonstrated excitation and active control of surface plasmon polaritons in graphene, as well as a graphene THz modulator with a high modulation depth, a high modulation speed, and a designable resonance frequency.
影响因子：
4.6
作者：
Nonoguchi Y;Ohashi K;Kanazawa R;Ashiba K;Hata K;Nakagawa T;Adachi C;Tanase T;Kawai T
通讯作者：
Kawai T
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
H. Hortensius;A. Ozturk;P. Zeng;E. Driessen;T. Klapwijk
通讯作者：
T. Klapwijk