POLARIZATION CHOICES IN EXCITON-BIEXCITON SYSTEM OF GAAS QUANTUM WELLS
POLARIZATION CHOICES IN EXCITON-BIEXCITON SYSTEM OF GAAS QUANTUM WELLS
复制标题
GAAS量子井激子-双激子系统的偏振选择
DOI：
10.1103/physrevb.55.1654
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发表时间：
1997
影响因子：
3.7
通讯作者：
M. Nakayama
中科院分区：
文献类型：
--
作者：
S. Adachi;T. Miyashita;S. Takeyama;Y. Takagi;A. Tackeuchi;M. Nakayama
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\char21{}150 \AA{} of GaAs/${\mathrm{Al}}_{\mathrm{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$As (x=0.3\char21{}1.0) multiple quantum wells.
