Abstract
© 2014 Optical Society of America.Electromagnetic metamaterials, made from arrangements of subwavelength-sized structures, can be used to manipulate radiation. Designing metamaterials that have a positive refractive index along one axis and a negative refractive index along the orthogonal axis can result in birefringences, Δn > 1. The effect can be used to create wave plates with subwavelength thicknesses. Previous attempts at making wave plates in this way have resulted in very narrow usable bandwidths. In this paper, we use the Pancharatnam method to increase the usable bandwidth. A combination of finite element method and transmission line models was used to optimize the final design. Experimental results are compared with the modeled data.
Original language | English |
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Pages (from-to) | 2001-2006 |
Number of pages | 5 |
Journal | Applied Optics |
Volume | 53 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1 Apr 2014 |
Keywords
- metamaterial
- wave plate
- negative refractive index
- pancharatnam
- left handed metamaterial
- polarisation