| Issue |
Europhys. Lett.
Volume 35, Number 4, August I 1996
|
|
|---|---|---|
| Page(s) | 265 - 270 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/epl/i1996-00564-y | |
| Published online | 01 September 2002 | |
Optical emission in periodic dielectrics
1
Van der Waals-Zeeman Instituut, Universiteit van Amsterdam, Valckenierstraat
65-67, 1018 XE Amsterdam, The Netherlands
2
Laboratoire de Physique Numérique des Systèmes Complexes/CNRS,
Maison des Magistères, Université Joseph Fourier - 38042 Grenoble Cedex 9, France
3
FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ
Amsterdam, The Netherlands
Received:
2
April
1996
Accepted:
13
June
1996
We show rigorously that the coefficient for spontaneous emission of an atom placed in a dielectric is proportional to the local radiative density of states —that is only a part of the local density of the eigenmodes of the Maxwell equations. Spontaneous emission is inhibited if the atom is located at a position where this local radiative density is small, even if the total density of states is not vanishing. This radiative density of states can be obtained without having to perform a full quantum calculation of the radiation-matter system. We demonstrate this principle by solving numerically a scalar model for a dielectric that consists of a lattice of resonating dipoles.
PACS: 32.70.Cs – Oscillator strengths, lifetimes, transition moments / 32.80.Pj – Optical cooling of atoms; trapping / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EDP Sciences, 1996
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