Simulation and testing of a graded negative index of refraction lens
- 25 August 2005
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 87 (9), 091114
- https://doi.org/10.1063/1.2037202
Abstract
A gradient index (GRIN) lens using a negative index of refraction material (NIM) has been designed and tested. The GRIN lens was fabricated using a NIM slab with a variable index of refraction perpendicular to the propagation direction. Ray tracing calculations based on the isotropic Eikonal equation determined the index of refraction gradient required for a given focal length. An electromagnetic code was then used to design the required ring and wire unit cells. Finally, the index of refraction was approximated using ten discrete steps in an effective medium simulation for the GRIN lens that agreed with the experimental measurements.Keywords
This publication has 6 references indexed in Scilit:
- Gradient index metamaterialsPhysical Review E, 2005
- Performance of a negative index of refraction lensApplied Physics Letters, 2004
- Quantum Critical Fluctuations in Disorderedd-Wave SuperconductorsPhysical Review Letters, 2003
- Experimental Verification of a Negative Index of RefractionScience, 2001
- Composite Medium with Simultaneously Negative Permeability and PermittivityPhysical Review Letters, 2000
- THE ELECTRODYNAMICS OF SUBSTANCES WITH SIMULTANEOUSLY NEGATIVE VALUES OF $\epsilon$ AND μSoviet Physics Uspekhi, 1968