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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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| Cite this article: |
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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.
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| Keywords:
42.50.Gy
42.50.Hz
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Published: 01 March 2005
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| PACS: |
42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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