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AlGaAs/GaAs多量子阱中相干控制光电流的超快弛豫 被引量:1

Studies on the Ultrafast Relaxation of Coherent Control Photocurrent in AlGaAs/GaAs MQWs
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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
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