Collective excitations and the dynamical Stark effect in a coherently driven exciton system.
Collective excitations and the dynamical Stark effect in a coherently driven exciton system.
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相干驱动激子系统中的集体激发和动态斯塔克效应。
DOI：
10.1103/physrevlett.57.2752
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发表时间：
1986
影响因子：
8.6
通讯作者：
D. Chemla
中科院分区：
文献类型：
--
作者：
S. Schmitt;D. Chemla
我们考虑在激子共振以下的透明区中，受强单色激光束照射的任意尺寸的半导体。我们计算了集体激发的光谱，并解释了最近观察到的激子的动态斯塔克效应。首次从第一性原理出发，导出了包含激子关联的非共振非线性极化率。
We consider a semiconductor of arbitrary dimension subject to a strong monochromatic laser beam in the transparency region below the exciton resonance. We calculate the spectrum of collective excitations and explain the recently observed dynamical Stark effect of the exciton. For the first time, we derive from first principles the nonresonant nonlinear susceptibility ${\ensuremath{\chi}}^{(3)}$ including exciton correlations.