Journal ArticleDOI
Band-Edge Electroabsorption in Quantum Well Structures: The Quantum-Confined Stark Effect
David A. B. Miller,Daniel S. Chemla,T. C. Damen,Arthur C. Gossard,W. Wiegmann,Thomas H. Wood,Charles A. Burrus +6 more
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In this article, the authors present theory and extended experimental results for the large shift in optical absorption in GaAs-AlGaAs quantum well structures with electric field perpendicular to the layers.Abstract:
We present theory and extended experimental results for the large shift in optical absorption in GaAs-AlGaAs quantum well structures with electric field perpendicular to the layers. In contrast to the Stark effect on atoms or on excitons in bulk semiconductors, the exciton resonances remain resolved even for shifts much larger than the zero-field binding energy and fields g 50 times the classical ionization field. The model explains these results as a consequence of the quantum confinement of carriers.read more
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Journal ArticleDOI
Designing guidelines for possible continuous-wave-operating nitride vertical-cavity surface-emitting lasers
TL;DR: In this article, a self-consistent threshold simulation of continuous wave (CW) operations at room temperature (RT) of possible GaN/AlGaN/al/AlN vertical-cavity surface-emitting lasers (VCSELs) is developed in a simple mathematical form to give an opportunity for it to be carried out using only PC-level computing power.
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Molecular spectrum of laterally coupled quantum rings under intense terahertz radiation.
TL;DR: The obtained results can be useful for the controlling of degeneracy of the discrete energy spectrum of nanoscale structures and in the tunneling effects therein.
Journal ArticleDOI
Well size dependence of Stark shifts for heavy‐hole and light‐hole levels in GaAs/AlGaAs quantum wells
T. Hiroshima,R. Lang +1 more
TL;DR: In this paper, the authors analyzed the Stark shift for heavy and light hole levels in an isolated GaAs/AlGaAs quantum well with an exact numerical calculation within the envelope function approximation.
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Enhancement of the Stark effect in coupled quantum wells for optical switching devices
TL;DR: In this paper, the multiband effective mass theory (k-p) was used to solve the exciton problem in coupled quantum wells. But the results showed that the optical dipole moment is substantially more reduced for the coupled quantum well at the same electric field because of enhanced charge separation in this structure.
Journal ArticleDOI
Piezoelectric, electro-optical, and photoelastic effects in InxGa1−xN/GaN multiple quantum wells
TL;DR: In this article, the applied electric field in InxGa1−xN/GaN multiple quantum wells (MQWs) was found to show a redshift in frequency with the increase of applied electric fields.