Subwavelength resolution for horizontal and vertical polarization by coupled arrays of oblate nanoellipsoids.
A structure comprising a coupled pair of two-dimensional arrays of oblate plasmonic nanoellipsoids in a dielectric host medium is proposed as a superlens in the optical domain for both horizontal and vertical polarizations. By means of simulations it is demonstrated that a structure formed by silver nanoellipsoids is capable of restoring subwavelength features of the object for both polarizations at distances larger than half wavelength. The bandwidth of subwavelength resolution is in all cases very large (above 13%).
Mateo-Segura
Carolina
C
Institute for Integrated Systems, Heriot-Watt University, Earl Mountbatten Building, Riccarton, Edinburgh EH14 4AS, United Kingdom. cm145@hw.ac.uk
Simovski
Constantin R
CR
Goussetis
George
G
Tretyakov
Sergei
S