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首页> 外文期刊>Physica, B. Condensed Matter >Extreme control of light in metamaterials: Complete and loss-free stopping of light
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Extreme control of light in metamaterials: Complete and loss-free stopping of light

机译：极端控制超材料中的光：完全无损地停止光

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摘要

We present an overview of recent advances within the field of slow- and stopped-light in metamaterial and plasmonic waveguides. We start by elucidating the mechanisms by which these configurations can enable complete stopping of light. Decoherence mechanisms may destroy the zero-group-velocity condition for real-frequency/complex-wavevector modes, but we show that metamaterial and nanoplasmonic waveguides also support complex-frequency/real-wavevector modes that uphold the light-stopping condition. A further point of focus is how, by using gain, dissipative losses can be overcome in the slow- and stopped-light regimes. To this end, on the basis of full-wave finite-difference time-domain (FDTD) simulations and analytic transfer-matrix calculations, we show that the incorporation of thin layers made of an active medium, placed adjacently to the core layer of a negative-refractive-index waveguide, can fully remove dissipative losses in a slow- or stopped-light regime where the effective index of the guided lightwave remains negative.
机译：我们概述了超材料和等离激元波导中慢光和停止光领域的最新进展。我们首先阐明这些配置可以使光线完全停止的机制。去相干机制可能会破坏实频/复波矢量模式的零群速度条件，但我们表明超材料和纳米等离子体波导也支持维持光阻条件的复频/实波矢量模式。另一个重点是通过使用增益，如何在慢光和停光条件下克服耗散损耗。为此，在全波时域有限差分（FDTD）模拟和解析传递矩阵计算的基础上，我们表明，结合了由活性介质制成的薄层，该薄层与碳纳米管的核心层相邻放置负折射率波导可以完全消除慢光或停止光条件下的耗散损耗，在这种情况下，导光波的有效折射率仍然为负。

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