CST – Computer Simulation Technology

Viability of focusing effect by left-handed stacked subwavelength hole arrays
M. Navarro-Ci´, M. Beruete, M. Sorolla, I. Campillo
Physica B: Condensed Matter
Volume: 405, Issue: 14, 2010
2950 - 2954
Metamaterial, Left-handed medium, Extraordinary transmission, Metallic lens
In this work we present advances in the design of lenses based on left-handed extraordinary transmission metamaterials which provide high transmission and focusing despite the subwavelength size of their constituent apertures. Due to the effective negative index of refraction of the close-stack of subwavelength hole arrays, concave profiles are required for focusing instead of the convex geometries of dielectric lenses. An analysis of the foci produced by plano- and bi-concave lens is carried out.

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