Optical dynamics in crystal slabs: crossover from superradiant excitons to bulk polaritons

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Abstract

The radiative-excited-state dynamics in crystal slabs is studied as a function of the slab thickness L. A general dispersion relation is derived that interpolates between the superradiant-exciton regime at thicknesses small compared to an optical wavelength lambda and bulk polaritons in thick crystals. It is shown that previous results predicting superradiance in thick slabs (L much greater than lambda) arise from invalid pole approximations.

Original languageEnglish
Pages (from-to)654-657
Number of pages4
JournalPhysical Review Letters
Volume68
Issue number5
DOIs
Publication statusPublished - 3-Feb-1992

Keywords

  • RADIATIVE DECAY

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