论文信息 - Population inversion by resonant tunneling in quantum wells

Population inversion by resonant tunneling in quantum wells

A terahertz quantum cascade laser based on a single quantum well active region is reported. It displays laser action at 3.74THz with low threshold current densities around 30A∕cm2. Analysis of the optical and electrical characteristics and their comparison with a transport model based on a density matrix approach clearly demonstrate the role of resonant tunneling for both injection and extraction of the electrons from the upper and lower states of the laser transition.

R. Terazzi | J. Faist | G. Scalari | N. Hoyler | M. Giovannini

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