Systematic study of spontaneous emission in a two-dimensional arbitrary inhomogeneous environment

Peng Fei Qiao, Wei E.I. Sha, Wallace C.H. Choy, Weng Cho Chew

Research output: Contribution to journalArticlepeer-review

Abstract

The spontaneous emission (SE) of the excited atoms in a two-dimensional (2D) arbitrary inhomogeneous environment has been systematically studied. The local density of states, which determines the radiation dynamics of a point source (for 3D) or a line source (for 2D), in particular, the SE rate, is represented by the electric dyadic Green's function. The numerical solution of the electric Green's tensor has been accurately obtained with the finite-difference frequency-domain method with the proper approximations of the monopole and dipole sources. The SE of atoms in photonic crystal and plasmonic metal plates has been comprehensively and comparatively investigated. For both the photonic crystal and plasmonic plates systems, the SEs depend on their respective dispersion relations and could be modified by the finite-structure or finite-size effects. This work is important for SE engineering and the optimized design of optoelectronic devices.

Original languageEnglish (US)
Article number043824
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume83
Issue number4
DOIs
StatePublished - Apr 20 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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