Junctions between two-dimensional plasmonic waveguides in the presence of retardation
Junctions between two-dimensional plasmonic waveguides in the presence of retardation
复制标题
存在延迟的二维等离子体波导之间的连接
DOI：
10.1088/2040-8986/ab4056
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发表时间：
2019
影响因子：
2.1
通讯作者：
Siaber S
中科院分区：
文献类型：
--
作者：
Siaber S
传统上，二维（2D）波导中的等离子体激元在静电近似下进行分析，该近似假设等离子体激元的相速度远小于光速。然而，新的效果最近已被证明为等离子体激元的速度是可比的光速。在这种延迟状态下，静电模型是不准确的。对于两个等离子体波导之间的结，我们提出了一个分析和数值模型都有效的延迟制度，并比较它们的静电模型。我们量化的反射和透射功率和辐射损失在几种情况下。我们发现，功率辐射从结的反射等离子体激元的功率为代价，但延迟的反射和透射等离子体激元的相位几乎没有影响。当等离子体激元速度比光速低五倍或更多倍时，辐射损失通常低于百分之几。然而，对于2D波导和完美导电片之间的结，对于较慢的等离子体速度，辐射仍然存在。因此，预期延迟会降低等离子体谐振器的品质因数而不影响其本征频率。
Plasmons in two-dimensional (2D) waveguides are traditionally analysed within the electrostatic approximation, which assumes that the plasmon phase velocity is much smaller than the velocity of light. However, novel effects have recently been demonstrated for plasmons whose velocity is comparable to the velocity of light. In this retardation regime, electrostatic models are inaccurate. For a junction between two plasmonic waveguides, we present an analytical and a numerical model both valid in the retardation regime and compare them to an electrostatic model. We quantify the reflected and transmitted powers and the radiation loss in several scenarios. We found that power is radiated from a junction at the expense of the power of the reflected plasmon, but retardation has little effect on the phases of the reflected and transmitted plasmons. The radiation loss is typically below several percent when the plasmon velocities are five or more times below the light velocity. However, radiation still persists for slower plasmon velocities for a junction between a 2D waveguide and a perfectly conducting sheet. As a result, retardation is expected to degrade the quality factors of plasmonic resonators without affecting their eigenfrequencies.
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影响因子：
3.2
作者：
Crowne, FJ
通讯作者：
Crowne, FJ
太赫兹等离子体激元放大镜
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
O. Sydoruk;R. Syms;L. Solymar
通讯作者：
L. Solymar
开放二维通道中的等离子体激元漂移：模态分析
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
O. Sydoruk
通讯作者：
O. Sydoruk
耦合二维半导体谐振器中的太赫兹等离子体激元
影响因子：
3.7
作者：
Sydoruk O
通讯作者：
Sydoruk O
DOI：
--
发表时间：
1982
期刊：
影响因子：
--
作者：
T. Hosono;T. Hinata;A. Inoue
通讯作者：
A. Inoue