Abstract
We study a nanoemitter in the vicinity of an impedance plane. We provide analytical expressions for the spontaneous emission rate γ and the angular emission pattern of the emitter in terms of the impedance, distance to the plane z0, and radiation wavelength λ0. We find that near a resistive plane, γ diverges as λ02/z02 in the limit z0≪λ0. In the opposite limit z0≫λ0, γ is an undulating function of z0/λ0 whose amplitude depends on the impedance. Both resistive and reactive components of the impedance can be harnessed to modify the angular emission pattern.
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