Picosecond time-resolved Raman studies of the expansion of electron-hole plasma in GaAs-AlxGa1-xAs multiple-quantum-well structures

Kong-Thon Tsen, H. Morkoc

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The spatial expansion of the photoexcited electron-hole plasma created by picosecond-pulse laser excitation in GaAs-AlxGa1-xAs multiple-quantum-well structures is investigated by time-resolved Raman scattering on a picosecond time scale. The experimental results show that the measured drift velocity of the plasma is comparable to its Fermi velocity. Consequently, our measurements demonstrate that the transport of the photoexcited electron-hole plasma in GaAs-AlxGa1-xAs quantum wells is thermodiffusive.

Original languageEnglish (US)
Pages (from-to)6018-6021
Number of pages4
JournalPhysical Review B
Volume34
Issue number8
DOIs
StatePublished - 1986

ASJC Scopus subject areas

  • Condensed Matter Physics

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