CST – Computer Simulation Technology

Experimental verification of broadband superlensing using a metamaterial with an extreme index of refraction

Title:
Experimental verification of broadband superlensing using a metamaterial with an extreme index of refraction
Author(s):
Mário G. Silveirinha, Carla R. Medeiros, Carlos A. Fernandes, Jorge R. Costa
Source:
PHYSICAL REVIEW
Vol./Issue/Date:
Volume: 81, Issue: 3, Jan. 2010
Year:
2010
Page(s):
033101-1 - 033101-4
Abstract:
Here, we report the experimental realization of a flat near-field lens formed by an array of densely packed crossed metallic wires. It is shown that due to the unusually strong electric response of the inclusions, the metamaterial slab may enhance the deep subwavelength spatial spectrum of a given source. It is experimentally demonstrated that when the superlens is placed in between the source and the image planes, keeping the propagation distance in the air regions unchanged, the resolution is boosted by a factor of 2 over a broad bandwidth that may exceed 25% the frequency of operation.
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