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Dipole emission and coherent transport in random media II. Density of states vs. index of refraction

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 نشر من قبل Manuel Donaire
 تاريخ النشر 2009
  مجال البحث فيزياء
والبحث باللغة English
 تأليف M. Donaire




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This is the second of a series of papers devoted to develop a microscopical approach to the dipole emission process and its relation to coherent transport in random media. In this Letter, we deduce a relation between the transverse decay rate of an emitter in a virtual cavity and the complex refraction index of the host medium. We argue on the possibility of a criterion for inhibition/enhancement of spontaneous emission in function of the transition frequency and the correlation length of the host scatterers. In addition, we study the radiative/non-radiative nature of the net power emission through a microscopical analysis of the scattering events involved. This study reveals essential discrepancies with previous interpretations.



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