Polarization choices in exciton-biexciton system of GaAs quantum wells

S. Adachi, T. Miyashita, S. Takeyama, Y. Takagi, A. Tackeuchi

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


We study the induced absorption due to biexciton formation in absorption bleaching pump-probe signals and the quantum beats between exciton and biexciton in the four-wave-mixing signals. The origin is confirmed by the polarization dependence of the signals in both experiments. The definite discrimination between exciton-biexciton quantum beats and the others by the polarization choices is demonstrated clearly. We also show the well-width dependence of the biexciton binding energy that is determined by the period of the quantum beats in the range of well width 45-150 Å of GaAs/(Formula presented)(Formula presented)As (x=0.3-1.0) multiple quantum wells.

Original languageEnglish
Pages (from-to)1654-1660
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
Publication statusPublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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