Variable group delay in a metamaterial with field-gradient-induced transparency
Variable group delay in a metamaterial with field-gradient-induced transparency
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DOI：
10.1103/physrevb.85.073102
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发表时间：
2011-09
影响因子：
3.7
通讯作者：
Y. Tamayama;T. Nakanishi;M. Kitano
中科院分区：
文献类型：
--
作者：
Y. Tamayama;T. Nakanishi;M. Kitano
我们实现了一种电致透明类超材料群延迟的可变控制。它的单元电池被设计成有一个亮模式和一个暗模式。两种模式之间的耦合强度由电磁场梯度决定。在具有场梯度诱导透明的超材料中，可以通过改变电磁平面波的入射角来改变透明频率处的群延迟。通过倾斜单层超材料，微波脉冲的群延迟可以在0.50到1.85 ns之间变化。
We realize variable control of the group delay in an electromagnetically induced transparency-like metamaterial. Its unit cell is designed to have a bright mode and a dark mode. The coupling strength between these two modes is determined by the electromagnetic field gradient. In this metamaterial with field-gradient-induced transparency, the group delay at the transparency frequency can be varied by varying the incident angle of the electromagnetic plane waves. By tilting a single layer of the metamaterial, the group delay of a microwave pulse can be varied between 0.50 and 1.85 ns.