Gain in a quantum wire laser of high uniformity
arXiv:cond-mat/0206125 · doi:10.1103/PhysRevB.67.041302
Abstract
A multi-quantum wire laser operating in the 1-D ground state has been achieved in a very high uniformity structure that shows free exciton emission with unprecedented narrow width and low lasing threshold. Under optical pumping the spontaneous emission evolves from a sharp free exciton peak to a red-shifted broad band. The lasing photon energy occurs about 5 meV below the free exciton. The observed shift excludes free excitons in lasing and our results show that Coulomb interactions in the 1-D electron-hole system shift the spontaneous emission and play significant roles in laser gain.
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References in corpus (2)
Cited by in corpus (5)
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