Kolinko, P; Smith, DR, *Numerical study of electromagnetic waves interacting with negative index materials*,
Optics express, vol. 11 no. 7
(2003),
pp. 640-648 .
**Abstract:**

*We study numerically the electromagnetic scattering properties of structures with negative indices of refraction. To perform this analysis, we utilize a commercial finite-element based electromagnetic solver (HFSS, Ansoft), in which a negative index material can be formed from mesh elements whose permittivity and permeability are both negative. In particular, we investigate the expected transmission characteristics of a finite beam incident on negative index prisms and lenses. We also confirm numerically the predicted superlens effect of an image formed by a planar slab with index n=-1, using two subwavelength (λ/20) slits as objects. © 2003 Optical Society of America.*