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Optical near-field mapping of excitons and biexcitons in naturally occurring semiconductor quantum dots

Ulrich Hohenester·Guido Goldoni·Elisa Molinari
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Abstract

We calculate the near-field optical spectra of excitons and biexcitons in semiconductor quantum dots naturally occurring at interface fluctuations in GaAs-based quantum wells, using a non-local description of the response function to a spatially modulated electro-magnetic field. The relative intensity of the lowest, far-field forbidden excitonic states is predicted; the spatial extension of the ground biexciton state is found in agreement with recently published experiments.

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Ulrich Hohenester, Guido Goldoni, Elisa Molinari. 2004-03-19. Optical near-field mapping of excitons and biexcitons in naturally occurring semiconductor quantum dots. https://doi.org/10.1063/1.1741033

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