Time-resolved interference of coherent polarization waves in semiconductors
Time-resolved interference of coherent polarization waves in semiconductors
复制标题
半导体中相干偏振波的时间分辨干涉
DOI：
10.1016/0030-4018(96)00297-0
复制
发表时间：
1996
影响因子：
2.4
通讯作者：
M. Colocci
中科院分区：
文献类型：
--
作者：
S. Ceccherini;F. Bogani;M. Gurioli;M. Colocci
我们的实验表明，相干瞬态可以通过一种简单的干涉技术在任何一种材料系统中进行研究，其时间分辨率仅受脉冲持续时间的限制。测量与吸收能量或共振弹性光散射相关的时间积分信号，作为两个激励脉冲之间时间延迟的函数，可以直接确定系统的相干状态。本文报道了在GaAs体样品和GaAs/AlGaAs量子阱结构中的验证性实验。
We experimentally show that coherent transients can be investigated in any kind of material systems by means of a simple interferometric technique with a time resolution limited only by the pulse duration. The measurement, as a function of the time delay between two excitation pulses, of the time integrated signal related either to the absorbed energy or to the resonant elastic light scattering allows a straightforward determination of the coherence status of the system. Demonstrative experiments in GaAs bulk samples and in GaAs/AlGaAs quantum well structures are reported.