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arXiv 1004.2619physics.optics
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具有极小线性介电常数的非线性超材料平板的横向磁滞

Transmissivity directional hysteresis of a nonlinear metamaterial slab with very small linear permittivity

Alessandro Ciattoni, Carlo Rizza, Elia Palange

摘要:

我们研究了横向磁场通过亚波长厚度的非线性超材料板的传播,该材料具有非常小的负线性介电常数。我们证明了,对于一个给定的输入强度,输出强度是一个多值函数的字段入射角,使transmittance表现出角度多稳定性和一个明显的方向滞后行为。预测的方向滞后是一个事实,即线性和非线性的贡献,整体介电响应可以是可比的,使得在输出板边界的电磁匹配条件允许一个以上的字段配置内的板是兼容的传输字段的结果。

英文摘要:

We investigate propagation of a transverse magnetic field through a nonlinear metamaterial slab of sub-wavelength thickness and with a very small and negative linear dielectric permittivity. We prove that, for a given input intensity, the output intensity is a multi-valued function of the field incidence angle so that the transmissivity exhibits angular multi-stability and a pronounced directional hysteresis behavior. The predicted directional hysteresis is a consequence of the fact that the linear and nonlinear contributions to the overall dielectric response can be comparable so that the electromagnetic matching conditions at the output slab boundary allow more than one field configurations within the slab to be compatible with the transmitted field.

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