Radiation From a Hertzian Dipole Embedded in a Wire-Medium Slab

Super-collimation of the radiation by a point source in a uniaxial wire medium

“…However, the study of the problem of radiation by localized sources embedded in a wire medium background was somehow on the back burner for a long time. Only recently this subject has been investigated in more detail [33][34][35][36]. In particular, the radiation properties of a short vertical dipole embedded in a uniaxial wire medium were investigated in reference [35], using both a nonlocal framework [4,6] and a quasi-static approach relying on additional variables that describe the internal degrees of freedom of the medium [8].…”

“…However, the study of the problem of radiation by localized sources embedded in a wire medium background was somehow on the back burner for a long time. Only recently this subject has been investigated in more detail [33][34][35][36]. In particular, the radiation properties of a short vertical dipole embedded in a uniaxial wire medium were investigated in Ref.…”

Super-Planckian thermal emission from a hyperlens

“…Note that still the modes with q(R) ≥ ω/c experience TIR at the dome-air interface and for these modes t HL = 0. From recent studies of the dipole radiation in WM [27,28] it is known that the irradiated wave beam is nearly as narrow as the WM period a. Therefore, in order to obtain high transmittance to free space (nearly as high as t HL ) for the dominant part of the spatial spectrum exited within HL, the divergence angle φ should be such that the separation between the nanowires at the outer surface of the HL is about λ/2 or larger.…”