2015/11/20 by Tiago A. Morgado, Mário G. Silveirinha, Morgado, Tiago A. +1
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Near-Field Optical Microscopy #Photonic Crystals and Applications #Plasmonic and Surface Plasmon Research #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.1511.06714
arxiv created 2015/11/20 · openalex publication_date 2015/11/20 · arxiv updated 2015/11/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the radiation properties of a short horizontal dipole embedded in a uniaxial wire medium. It is shown that the uniaxial wire medium enables a super-collimation of the dipole radiation such that the radiation pattern has a singularity and the radiated fields are non-diffractive in the broadside direction. We derive a closed analytical formula for the power radiated by the dipole. Our theory demonstrates that as a consequence of the ultrahigh density of photonic states of the nanowire array, the power radiated by the dipole is strongly enhanced as compared to that emitted in the dielectric host material.