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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QTuG18

Suppression of atomic radiation in a cylindrical nanocavity

Open Access Open Access

Abstract

An excited atom placed inside a cylindrical nanocavity cannot radiate if the frequency of emission is below the cutoff frequency for electromagnetic wave propagation in the cavity. However, we demonstrate that it can be de-excited through the emission of surface plasmons. The observable effect will be a substantial enhancement in the life- time of dipole-allowed transitions. The recently discovered carbon nanotubules are explored as potential nanometer-scale cylindrical cavities, and the lifetimes of excited states of helium (2p → 1s) in the carbon nanocavities are calculated as an example of this nonradiative decay mechanism.

© 1995 Optical Society of America

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