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- Title
Long wavelength superluminal pulse propagation in a defect slab doped with GaAs/AlGaAs multiple quantum well nanostructure.
- Authors
Panahi, M.; Solookinejad, G.; Sangachin, E. Ahmadi; Asadpour, S. H.
- Abstract
In this paper, long wavelength superluminal and subluminal properties of pulse propagation in a defect slab medium doped with four-level GaAs/AlGaAs multiple quantum wells (MQWs) with 15 periods of 17.5 nm GaAs wells and 15 nm barriers is theoretically discussed. It is shown that exciton spin relaxation (ESR) between excitonic states in MQWs can be used for controlling the superluminal and subluminal light transmissions and reflections at different wavelengths. We also show that reflection and transmission coefficients depend on the thickness of the slab for the resonance and nonresonance conditions. Moreover, we found that the ESR for nonresonance condition lead to superluminal light transmission and subluminal light reflection.
- Subjects
WAVELENGTHS; SUPERLUMINAL effect; GALLIUM arsenide; QUANTUM wells; NANOSTRUCTURES; LIGHT transmission
- Publication
Modern Physics Letters B, 2015, Vol 29, Issue 33, p-1
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S0217984915502164