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Strongly confined semiconductor quantum dots: Pair excitations and optical properties |
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| Authors: | Y. Z. Hu S. W. Koch N. Peyghambarian |
| Affiliation: | a Optical Sciences Center, University of Arizona, Tucson, AZ 85721, USA b Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Renthof 5, 35112, Marburg, Germany |
| Abstract: | This paper reviews a microscopic model of basic electron-hole pair excitation processes in strongly confined semiconductor quantum dots (QD) and their influence on the optical QD properties. The effects of valence band mixing, Coulomb interaction, and surface polarization are taken into account. The exciton and biexciton wave functions and energies are obtained using a numerical diagonalization method. The computed optical spectra, such as absorption, gain, pump-probe, and two-photon absorption, agree well with experiments. |
| Keywords: | Semiconductor quantum dots Strong confinement Pair excitations Optical properties |
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