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https://knowledgecommons.lakeheadu.ca/handle/2453/3230
Title: | Optically-excited excitonic states in semiconductor superlattices |
Authors: | Lachaine, Jean-Marc |
Keywords: | Exciton theory;Superlattices as materials (Optical properties) |
Issue Date: | 2002 |
Abstract: | An efficient method for calculation of the exciton states in type-I superlattices is developed and demonstrated. The model, based on the work of Dignam & Sipe [Phys. Rev. B 43,4097 (1991)], includes bound and quasi-continuous two-well exciton eigenstates as a basis in which to expand the superlattice exciton eigenstates. This basis is used to calculate the excitonic absorption spectra for two different type-I superlattices as a function of the applied static field. The results are found to be in very good agreement with the experimental results of Holfeld et. al [Phys. Rev. Lett. 81, 874 (1998)] for the 67A/17A superlattice and with those of Agullo-Rueda et. al [Phys. Rev. B 41, 1676 (1990)] for the 40A/40 A superlattice. On the basis of these results, this method should be ideal for use in the calculation of nonlinear and coherent effects in optically excited semiconductor superlattices. |
URI: | http://knowledgecommons.lakeheadu.ca/handle/2453/3230 |
metadata.etd.degree.discipline: | Physics |
metadata.etd.degree.name: | Master of Science |
metadata.etd.degree.level: | Master |
metadata.dc.contributor.advisor: | Dignam, Marc M. |
Appears in Collections: | Retrospective theses |
Files in This Item:
File | Description | Size | Format | |
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LachaineJ2002m-1b.pdf | 2.8 MB | Adobe PDF | View/Open |
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