Abstract
A deep analysis of bi- and plano-concave lens made of stacked subwavelength hole arrays in terms of focus and angular power distribution is presented. The key difference between these left-handed extraordinary transmission lenses (LHET-lenses) and the classical metallic lenses is based on the fact that contrary to the latter ones, LHET-lenses work in the cut-off region of the circular waveguide formed by consecutive stacked holes. This leads to a negative index of refraction, whereas metallic lenses exhibit a positive but less than one index of refraction.
Original language | English |
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Article number | 5753920 |
Pages (from-to) | 2141-2151 |
Number of pages | 11 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 59 |
Issue number | 6 PART 2 |
DOIs | |
Publication status | Published - Jun 2011 |
Keywords
- Eggcrate lens
- extraordinary transmission
- metallic lens
- metamaterials
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics