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On the Nature of Charge Transport in Quantum-Cascade Lasers

Rita Claudia Iotti·Fausto Rossi
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Abstract

The first global quantum simulation of semiconductor-based quantum-cascade lasers is presented. Our three-dimensional approach allows to study in a purely microscopic way the current-voltage characteristics of state-of-the-art unipolar nanostructures, and therefore to answer the long-standing controversial question: is charge transport in quantum-cascade lasers mainly coherent or incoherent? Our analysis shows that: (i) Quantum corrections to the semiclassical scenario are minor; (ii) Inclusion of carrier-phonon and carrier-carrier scattering gives excellent agreement with experimental results.

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Rita Claudia Iotti, Fausto Rossi. 2001-08-21. On the Nature of Charge Transport in Quantum-Cascade Lasers. https://doi.org/10.1103/physrevlett.87.146603

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