Resumen

FLORES-DESIRENA, B; MARQUEZ-ISLAS, R; ATENCO-ANALCO, N  y  PEREZ-RODRIGUEZ, F. On the coupling of size-quantized excitons with light in one-dimensional dielectric-semiconductor photonic crystals. Rev. mex. fis. [online]. 2008, vol.54, suppl.2, pp.87-94. ISSN 0035-001X.

The optical properties of exciton polaritons in one-dimensional photonic crystals are theoretically investigated. The periodic photonic structure is formed by two alternating layers, namely a local dielectric layer and a thin semiconductor one which is characterized by a nonlocal excitonic dielectric function. We calculate reflectivity spectra for one-dimensional MgO-CuCl photonic crystals, which exhibit a rich resonance structure because of the optical manifestation of size-quantized excitons. We study the changes in the resonance structure as the thickness of the thin semiconductor layer is varied. It is found that odd quantized-exciton modes are well manifest in the optical spectra in comparison with even states. We have also investigated the effect of both homogeneous bulk damping and interface-induced broadening upon the reflectivity resonances. The broadening due to interface disorder is calculated with the self-consistent Green's function method.

Palabras llave : Exciton; semiconductor nanostructures; photonic crystals.

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