Chin. Phys. Lett.  2005, Vol. 22 Issue (1): 188-190    DOI:
Original Articles |
Ultrafast Relaxation of Coherent Control Photocurrent in AlGaAs/GaAs Multi Quantum Wells
LIN Wei-Zhu;SHOU Qian;LIU Lu-Ning;WU Yu,WEN Jin-Hui;LAI Tian-Shu
State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275
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LIN Wei-Zhu, SHOU Qian, LIU Lu-Ning et al  2005 Chin. Phys. Lett. 22 188-190
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Abstract We theoretically and experimentally study the ultrafast dynamics of coherent control photocurrent in AsGaAs/GaAs multi quantum wells at room temperature. A ballistic photocurrent relaxation time of ~200fs is deduced based on the theory of density matrix and is evidenced with the three-colour femtosecond pump--probe measurements.
Keywords: 72.15.Lh      78.67.De      42.50.Md     
Published: 01 January 2005
PACS:  72.15.Lh (Relaxation times and mean free paths)  
  78.67.De (Quantum wells)  
  42.50.Md (Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I1/0188
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LIN Wei-Zhu
SHOU Qian
LIU Lu-Ning
WU Yu
WEN Jin-Hui
LAI Tian-Shu
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