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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1991),
  • paper CFO5

Photoluminescence excitation of Bragg confined electronic carriers on a quantum barrier

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Abstract

Carrier confinement is usually achieved by trap-ping them in semiconductor potential wells. Thus, the upper limit for the energy bandgap of confined states is the barrier bandgap. This leads to photo-luminescence at wavelengths longer than those corresponding to the barrier energy gap, and sets, for a given material family, a fundamental limit to the shortest wave-length at which laser emission can be obtained. Carrier confinement to the region of a quantum barrier was recently proposed by us and by others.1,2

© 1991 Optical Society of America

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