Longitudinal optical phonon assisted relaxation of excitons due to intersubband transitions in quantum wells

In-Keun Oh, Jai Singh, AS Vengurlekar

    Research output: Contribution to journalComment/debate

    6 Citations (Scopus)

    Abstract

    Longitudinal optical phonon assisted relaxation of excitons involving intersubband transitions is studied in quantum wells. Considering the relaxation of an exciton from a higher subband to a free electron-hole pair in lower subbands by longitudinal optical phonon emission, we calculate the rate of relaxation as a function of exciton density, temperature, and wave vector K-parallel to of the center-of-mass of exciton in quantum wells. The theory is finally applied to GaAs quantum wells and results are compared with experiment.
    Original languageEnglish
    Pages (from-to)5796-5801
    Number of pages6
    JournalJournal of Applied Physics
    Volume91
    Issue number9
    DOIs
    Publication statusPublished - 2002

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