摘要
在理论和实验上对室温下AlGaAs GaAs量子阱中的相干控制光电流的超快动力学过程进行了研究。首次由密度矩阵和电子-空穴散射弛豫模型导出相干光电流的弛豫时间为600fs,并由三波长飞秒脉冲泵浦-探测技术测量的结果得到验证。
The ultrafast dynamics of coherent control photocurrent in AsGaAs/GaAs MQWs at room temperature is studied theoretically and experimentally. A ballistic photocurrent relaxation time of ~600 fs is deduced with the theory of density matrix and electron_hole scattering relaxation model. This result is evidenced with the three color femtosecond pulse pump_probe measurements.
出处
《中山大学学报(自然科学版)》
CAS
CSCD
北大核心
2004年第6期73-76,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家自然科学基金资助项目(60178020
10274107
60378006)
广东省自然科学基金资助项目(011204
2002B11601)
关键词
飞秒脉冲
半导体量子阱
光学相干控制
femtosecond pulses
semiconductor quantum wells
optical coherent control