TE-polarized design for metallic slit lenses: a way to deep-subwavelength focusing over a broad wavelength range.

Abstract

Slit arrays based on noble metals have been widely proposed as planar transverse-magnetic (TM)-lenses, illuminated by a linearly polarized light with the polarization perpendicular to slits and implementing the focusing capability beyond the diffraction limit. However, due to intrinsic plasmonic losses, these TM-lenses cannot work efficiently in the… (More)
DOI: 10.1364/OL.43.000206

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