Anomalous Propagation in Low Index Contrast Metamaterials : Assessment of the Beam Collimation Condition

الملخص EN

Anomalous beam propagation in low index-contrast metamaterials has been analyzed.

The condition for a well-collimated beam is found to be depending on the beam width and the pertinent Fourier component of the dielectric function.

Guided by this condition, an ultra-compact metamaterial structure is designed to deflect a light beam at a wide angle.

The structure is tolerant to structural parameter deviation and has a wide bandwidth.