Some Considerations on Energy Levels of Quantum Cascade Lasers
YANG Quan-kui, LI Ai-zhen
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050
Some Considerations on Energy Levels of Quantum Cascade Lasers
YANG Quan-kui;LI Ai-zhen
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050
关键词 ：
73.20.Dx ,
71.10.+x ,
78.30.Fs
Abstract ： Conduction band non-parabolicity is taken into account and a numerical method is proposed to calculate the electron subband energy levels and corresponding wave functions in the active region of quantum cascade lasers. For a coupled double-well vertical transition mode active region, the calculated ΔE21 = 32 meV, ΔE32 = 270 meV correspond, respectively, to the energy of an optical phonon and that of a photon at wavelength λ = 4.5μm. For a coupled triple-well vertical transition active region, the calculated ΔE21 = 32.4meV, ΔE32 = 250meV correspond to the energy of an optical phonon and the photon energy at wavelength λ= 5.0 μm.
Key words ：
73.20.Dx
71.10.+x
78.30.Fs
出版日期: 1999-06-01
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