Popov Alexander K, Myslivets Sergey A
Opt Lett. 2017 Oct 15;42(20):4151-4154. doi: 10.1364/OL.42.004151.
We propose metamaterial (MM) that supports a mixture of three or more normal and backward electromagnetic modes with equal co-directed phase velocities and mutually contra-directed energy fluxes. This enables extraordinary three-wave mixing, greatly enhanced optical parametric amplification, and frequency-changing generation of entangled photons in the reflection direction. Proof-of-principle numerical simulation of such processes is presented based on the particular example of the wave-guided terahertz waves contra-propagating in the MM made of carbon nanotubes.
我们提出了一种超材料（MM），它支持三种或更多种正向和反向电磁模式的混合，这些模式具有相等的同向相速度和相互反向的能流。这使得能实现非凡的三波混频、大大增强的光学参量放大以及在反射方向上产生纠缠光子的频率变换。基于在由碳纳米管制成的超材料中反向传播的波导太赫兹波的具体示例，给出了此类过程的原理验证数值模拟。
