Journal ArticleDOI
Plasma-Density Dependence of the Optical Spectra for Quasi-One-Dimensional Quantum Well Wires
S. Benner,H. Haug +1 more
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In this article, the nonlinear spectra of absorption and dispersion near the band edge are calculated for quantum well wires with one subband, taking into account phase space filling, plasma screening and band gap renormalization due to an optically excited thermal electron-hole plasma.Abstract:
The nonlinear spectra of absorption and dispersion near the band edge are calculated for quantum well wires with one subband The calculations take into account phase space filling, plasma screening and band gap renormalization due to an optically excited electron-hole plasma Large optical nonlinearities are obtained around the exciton ground state mainly due to state-filling by the optically excited thermal electron-hole plasma, while the plasma screening effects are found to have relatively little influence For all plasma densities n (including n = 0), the free-carrier transition spectra differ strongly from those calculated with Coulomb interactionread more
Citations
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Journal ArticleDOI
Coulomb Correlation and Band Gap Renormalization at High Carrier Densities in Quantum Wires
R. Ambigapathy,I. Bar-Joseph,D. Y. Oberli,Stefan Haacke,M. J. Brasil,F. Reinhardt,Eli Kapon,Benoit Deveaud +7 more
TL;DR: In this article, the luminescence of narrow quantum wires at photoexcitation densities of up to similar to 3 x 10(6) cm(-1) was studied and it was shown that excitonic recombination dominates over other recombination channels in stark contrast with the behavior of quantum wells and bulk structures at equivalent densities.
Journal ArticleDOI
Single nanowire extinction spectroscopy.
TL;DR: By probing individual CdSe nanowires, this work has identified and assigned size-dependent exciton transitions occurring across the visible and revealed the existence of room temperature 1D excitons in the narrowest NWs.
Journal ArticleDOI
Electronic states and optical transitions in low-dimensional semiconductors
R. Cingolani,Ross Rinaldi +1 more
Journal ArticleDOI
Observation of large many-body Coulomb interaction effects in a doped quantum wire
Hidefumi Akiyama,Hidefumi Akiyama,Hidefumi Akiyama,Loren Pfeiffer,Aron Pinczuk,Aron Pinczuk,Ken W. West,Masahiro Yoshita +7 more
TL;DR: In this paper, strong one-dimensional many-body interaction effects in photoluminescence (PL) in a GaAs single quantum wire of unprecedented optical quality, where 1D electron plasma densities are controlled via electrical gating.
Journal ArticleDOI
Coulomb-correlated electron-hole plasma and gain in a quantum-wire laser of high uniformity
Hidefumi Akiyama,Loren Pfeiffer,Masahiro Yoshita,Aron Pinczuk,Peter B. Littlewood,Ken W. West,Manyalibo J. Matthews,J. D. Wynn +7 more
TL;DR: In this paper, a multi-quantum-wire laser operating in the one-dimensional ground state has been achieved in a very high uniformity structure that shows free-exciton emission with unprecedented narrow width and low lasing threshold.
References
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Journal ArticleDOI
Optically detected carrier confinement to one and zero dimension in GaAs quantum well wires and boxes
TL;DR: In this article, a carrier confinement to one and zero degrees of freedom has been achieved in artificial quantum well wires and boxes fabricated in the GaAs•GaAlAs system, which is attributed to transitions arising from ground and excited levels of electrons within these low dimensional structures.
Journal ArticleDOI
Optical transitions in quantum wires with strain-induced lateral confinement.
David Gershoni,J. S. Weiner,S. N. G. Chu,G. A. Baraff,J. M. Vandenberg,Loren Pfeiffer,Ken W. West,Ralph A. Logan,Tawee Tanbun-Ek +8 more
TL;DR: In this article, the in-plane lattice constant of a GaAs/GaAlAs quantum well, grown over an InGaAs/GAAs strained-layer superlattice, laterally confines the carriers to one dimension.
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