抄録
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.
本文言語 | English |
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ページ(範囲) | 1654-1660 |
ページ数 | 7 |
ジャーナル | Physical Review B - Condensed Matter and Materials Physics |
巻 | 55 |
号 | 3 |
DOI | |
出版ステータス | Published - 1997 |
外部発表 | はい |
ASJC Scopus subject areas
- 電子材料、光学材料、および磁性材料
- 凝縮系物理学