Femtosecond studies of the excitonic optical Stark effect in an anisotropically strained multiple quantum well

被引：0
|
作者：
Wraback, M [1 ]
Shen, H [1 ]
Pamulapati, J [1 ]
Newman, PG [1 ]
Binder, R [1 ]
Dutta, M [1 ]
机构：
[1] USA, Res Lab, Sensors & Electron Devices Directorate, AMSRL,SE,EM, Adelphi, MD 20783 USA
来源：
PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON EXCITONIC PROCESSES IN CONDENSED MATTER - EXCON '98 | 1998年 / 98卷 / 25期
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中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Femtosecond pump and probe measurements with linearly polarized light pulses have been employed in the study of the excitonic optical Stark effect in a GaAs/AlGaAs MQW under in-plane anisotropic strain. A significant dependence of the photoinduced blue shift and bleaching of the lowest heavy-hole-like exciton resonance on the orientation of the pump and probe polarization vectors with respect to the axis of maximum compressive strain has been observed. Theoretical calculations performed using the generalized anisotropic multiband semiconductor Bloch equations provide a qualitative explanation of the experimental results.
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页码：192 / 197
页数：6
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