Spontaneous emission in the presence of a dielectric cylinder

Abstract

Spontaneous emission of photons by an atom placed near a dielectric cylindrical waveguide at an arbitrary position is analyzed using global free electromagnetic modes, satisfying necessary continuity conditions at the slab boundaries. These modes include the modes extended over the whole space ͑travelling͒ and the modes trapped to a waveguide ͑waveguided͒. To describe angular properties of the spontaneous emission, a parametrization of the travelling modes by the outgoing waves has been proposed. Angular characteristics of the travelling photon emission, distributions of the trapped photon emission, as well as the global decay rates have been calculated using the quantum approach and the standard perturbation theory. Difficulties due to the presence of sharp resonances ͑whispering gallery modes͒ among the travelling photons are pointed out.

Spontaneous emission rate of an excited atom placed near a nanofiber

“…In the case of ρ-orientation of dipole momentum we have (27) while in the case of ϕ-orientation the dipole momentum of fiber will be…”

“…First investigation of the decay rate of an atom placed on the axis of dielectric fiber was undertaken within classical approach in [23][24]. Recently that problem attracted new interest [25][26][27][28]. In [29][30] spontaneous emission near carbon nanotubes was considered.…”

Atomic spontaneous decay near a finite-length dielectric cylinder

“…They are a key component in recent considerations of atom chips [11], spontaneous decay rates and level shifts [12][13][14][15][16][17][18][19], zero-point energy [20], Casimir-Polder interactions [21][22][23], and intermolecular resonance energy transfer [24]. In all these works, the cylinders are assumed to be infinitely long.…”

Spontaneous emission and energy transfer rates near a coated metallic cylinder

“…Various structures have been investigated with respect to their role in modifying the SE rate: planar dielectric and metallic interfaces [2][3][4][5][6][7][8], spheres [9][10][11][12][13], and dielectric and metallic cylinders [14][15][16][17][18][19][20][21][22].…”