Journal
PHYSICA B-CONDENSED MATTER
Volume 434, Issue -, Pages 112-117Publisher
ELSEVIER
DOI: 10.1016/j.physb.2013.10.040
Keywords
Biexciton; Exciton spin relaxation; Incoherent pumping field; Quantum well nanostructure
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In this paper, we investigate the effect of incoherent pumping field and exciton spin relaxation on optical properties of four-level biexciton-exciton double cascade-type configuration. It is shown that probe absorption, dispersion and group velocity can be controlled via incoherent pumping field and exciton spin relaxation. Also it is found that the probe absorption is converted to the probe gain in the presence of population inversion. (C) 2013 Elsevier B.V. All rights reserved.
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