Influence of exciton-exciton interactions on frequency-mixing signals in a stable exciton-biexciton system

被引：25

作者：

Ishi, J

Kunugita, H

Ema, K

Ban, T

Kondo, T

机构：

[1] Sophia Univ, Dept Phys, Chiyoda Ku, Tokyo 1028554, Japan

[2] Univ Tokyo, Dept Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.63.073303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transient nondegenerate four-wave mixing was performed in the femtosecond domain on a stable exciton-biexciton system. For excitation with two spectrally narrow pulses of frequencies omega (1) and omega (2) that have no spectral overlap with each other, only a frequency-mixing signal at 2 omega (1)-omega (2) was observed. The polarization dependence of the frequency-mixing signal intensity changed dramatically with increasing frequency difference between the incident pulses. Our results demonstrate that the frequency-mixing signal is strongly correlated with the exciton dynamics and the dramatic change of its polarization dependence is caused by the exciton-exciton interactions.

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页数：4

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