Quantum kinetics regime during and immediately after laser excitation of semiconductors

被引:10
作者
BarAd, S
Chemla, DS
机构
[1] UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720
[2] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720
来源
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1997年 / 48卷 / 1-2期
基金
美国国家科学基金会;
关键词
semiconductors; quantum kinetics; thermalization; short pulse spectroscopy;
D O I
10.1016/S0921-5107(97)00085-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We investigated carrier dynamics in the semiconductor GaAs, during and just after creation by approximate to 30 fs laser pulses, much shorter than the phonon and plasma time scales. We observed a quasi-instantaneous spread of the carrier population in momentum-energy space, that is not even qualitatively consistent with Boltzmann kinetics. The observations are, however, in qualitative agreement with quantum kinetic theories of carrier-carrier and carrier-phonon scattering. (C) 1997 Elsevier Science S.A.
引用
收藏
页码:83 / 87
页数:5
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