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Conferences > QELS > 1995 > QThF > QThF3
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QThF3

Direct observation of population-induced broadening in quantum-well intersubband transitions

Gilad Almogy, Yuanjian Xu, Andrew Tong, Ali Shakouri, and Amnon Yariv

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Abstract

We report on the use of charge transfer between asymmetric double quantum wells (ADQWs) to directly study the broadening of intersubband transitions (ISBTs) as a function of the electron population. Although other mechanisms, such as field- induced scattering over interface roughness and impurities, optical and acoustic- phonons, and width nonuniformity, play a role, it is shown that the broadening is directly related to subband occupation.

© 1995 Optical Society of America

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