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Intersubband Transitions In Ingaas/Inalas Multiple Quantum Wells Grown On Inp Substrate

  • Qiaoying Zhou (a1), M. O. Manasreh (a1), B. D. Weaver (a2) and M. Missous (a3)

Abstract

Intersubband transitions in In0.52Ga0.48As/In0.52Al0.48As multiple quantum wells grown on lattice matched InP substrates were investigated using Fourier transform infrared (FTIR) absorption and photoluminescence (FTPL) techniques. The well width was tailored to produce excited states resonant in the conduction band, at the edge of the conduction band, and confined in the quantum wells. Interband transitions were also probed using FTPL and optical absorption techniques. The FTPL spectra show that three interband transitions exist in the quantum well structures with well width larger than 30 Å. The intersubband transitions in this class of quantum wells seem to withstand proton irradiation with doses higher than those used to deplete the intersubband transitions in the GaAs/AlGaAs multiple quantum wells.

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Intersubband Transitions In Ingaas/Inalas Multiple Quantum Wells Grown On Inp Substrate

  • Qiaoying Zhou (a1), M. O. Manasreh (a1), B. D. Weaver (a2) and M. Missous (a3)

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