Terahertz dynamics of excitons in GaAs/AlGaAs quantum wells

Černe, J. Kono, M. S. Sherwin, M. Sundaram, A. C. Gossard, G. E.W. Bauer

Research output: Contribution to journalArticlepeer-review

106 Citations (Scopus)


By monitoring changes in excitonic photoluminescence that are induced by far-infrared (FIR) radiation, we observed resonant FIR absorption by magnetoexcitons in GaAs/AlGaAs quantum wells. The dominant resonance is assigned to the 1s→2p+ transition of the heavy-hole exciton, and agrees well with theory. At low FIR and interband excitation intensities, the 1s→2p+ absorption feature is very narrow and broadens as either of these intensities is increased. The 1s→2p+ absorption feature persists even when the FIR electric field is comparable to the electric field which binds the exciton.

Original languageEnglish
Pages (from-to)1131-1134
Number of pages4
JournalPhysical Review Letters
Issue number6
Publication statusPublished - 1996


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