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arXiv 1902.01121physics.app-ph
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具有电、磁交错共振的宽带任意群延迟反射超表面

Metasurfaces with Interleaved Electric and Magnetic Resonances for Broadband Arbitrary Group Delay in Reflection

Odysseas Tsilipakos, Thomas Koschny, Costas M. Soukoulis

摘要:

超颖表面在通常限于0-2 $π$的撞击电磁波上赋予相位不连续性。在这里,我们表明,他们可以摆脱这种限制,并提供任意大的相位调制超宽的带宽。这是通过在电和磁片导纳中实现多个适当布置的谐振来实现的。我们展示了超颖表面,可以完美地反映宽带脉冲赋予规定的群延迟,而不会扭曲脉冲形状,打开新的可能性,时间控制和色散工程在深亚波长的物理尺度。

英文摘要:

Metasurfaces impart phase discontinuities on impinging electromagnetic waves that are typically limited to 0-2$π$. Here, we show that they can break free from this limitation and supply arbitrarily-large phase modulation over ultra-wide bandwidths. This is achieved by implementing multiple, properly-arranged resonances in the electric and magnetic sheet admittivities. We demonstrate metasurfaces that can perfectly reflect a broadband pulse imparting a prescribed group delay without distorting the pulse shape, opening new possibilities for temporal control and dispersion engineering across deeply subwavelength physical scales.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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