Chin. Phys. Lett.  2005, Vol. 22 Issue (3): 599-602    DOI:
Original Articles |
Gain Spectrum in an Asymmetric Double Quantum Well
XU Wei-Hua1;WU Jin-Hui2;GAO Jin-Yue2
1Department of Physics, College of Science, Shenzhen University, Shenzhen 518060 2Key Laboratory for Coherent Light, Atomic and Molecular Spectroscopy (Ministry of Education), Jilin University, Changchun 130023
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XU Wei-Hua, WU Jin-Hui, GAO Jin-Yue 2005 Chin. Phys. Lett. 22 599-602
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Abstract We propose a scheme for light amplification in an asymmetric double quantum well, where two excited states are coupled by resonant tunnelling through a thin barrier in a three-level system of electronic subbands. By applying a single driving laser, the steady state gain can be obtained. The calculated gain spectrum for an asymmetric GaAs/AlGaAs double quantum well structure was presented.
Keywords: 42.50.Gy      42.50.Hz     
Published: 01 March 2005
PACS:  42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)  
  42.50.Hz (Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I3/0599
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