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
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
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.
2005, Vol. 22 
