Abstract:
A detailed calculation of interface phonon assisted electron intersubband transition in double GaAs/AlGaAs quantum well structure is presented. Our calculation concentrates on the lowest two subbands which can be designed to be in resonance with a given interface phonon mode. Various phonon mode profiles display quasi-symmetric or quasi-antisymmetric shapes. The quasi-antisymmetric phonon modes give rise to much larger transition rates than those assisted by quasi-symmetric ones. The transition rate reaches a maximum when the subband separation coincides with a given phonon mode energy. The calculation procedure presented here can be easily applied to the design and simulation of other low dimensional semiconductor structures, such as quantum cascade lasers.
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Received 22 December 2002 Published online 23 May 2003
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Wu, B., Cao, J., Xia, G. et al. Interface phonon assisted transition in double quantum well. Eur. Phys. J. B 33, 9–14 (2003). https://doi.org/10.1140/epjb/e2003-00135-2
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DOI: https://doi.org/10.1140/epjb/e2003-00135-2