Dispersive gain and loss in midinfrared quantum cascade laser

D. G. Revin, M. R. Soulby, J. W. Cockburn, Q. Yang, C. Manz et al.
We report the measurements of dispersive gain (simultaneous coexistence of gain and losses on a single intersubband transition) in a quantum cascade laser. Broadband transmission spectra through the waveguide of a lambda~4.7 [mu]m InGaAs/AlAsSb/InP quantum cascade laser have been studied at a bias ... [Appl. Phys. Lett. 92, 081110 (2008)] published Thu Feb 28, 2008.
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