Abstract
In this work we study exciton-polariton modes confined in wurtzite GaN
thin films on sapphire substrates. Using standard electromagnetic
boundary conditions, together with the exciton additional boundary
condition, the exciton-polariton dispersion relation is then obtained,
in both s and p-polarization, by solving a secular determinant. Our
results show that the exciton quantized energies lie outside the bulk
modes, with mixed surface and guided modes. (C) 2002 Elsevier Science
Ltd. All rights reserved.
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