Unidirectional excitation of hyperbolic bulk modes (IMAGE)

SPIE--International Society for Optics and Photonics

Unidirectional excitation of hyperbolic bulk modes

Caption

Unidirectional excitation of hyperbolic bulk modes using an all-electric Huygens metasource: (a) (b) Calculated excitation factor of |Fk| the all-electric Huygens metasource as a function of the propagation direction θ in different settings. The |Fk| functions in the HMM and air are denoted by blue and orange lines, respectively. The dashed red and black lines indicate the HMM dispersion ?(kx,kz) and the maximum value of |Fk|. (c), (d) Measured unidirectional propagation of the all-electric Huygens metasource in a circuit-based HMM for (a) and (b), respectively.

Credit

Z. Guo et al., doi 10.1117/1.AP.3.3.036001.

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