Abstract
We have explored the possibility of modulating the optical gain in the active region of mid-infrared QCLs by means of external magnetic field, which strongly influences the relaxation processes, in particular the LO phonon assisted intersubband transitions. The additional carrier confinement, induced by the field, leads to an increase in the upper laser level carrier lifetime, which results in pronounced oscillations of the optical gain. The described model was applied to two structures designed for λ∼9µm emission.
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Radovanović, J. et al. (2006). Calculation of Optical Gain and Electron Relaxation Rates in Single- and Double-Phonon Resonant Quantum Cascade Lasers in a Magnetic Field. In: Saraniti, M., Ravaioli, U. (eds) Nonequilibrium Carrier Dynamics in Semiconductors. Springer Proceedings in Physics, vol 110. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-36588-4_72
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DOI: https://doi.org/10.1007/978-3-540-36588-4_72
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