The first global quantum simulation of semiconductor-based quantum-cascade lasers is presented. Our three-dimensional approach allows us 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 and (ii) inclusion of carrier-phonon and carrier-carrier scattering gives excellent agreement with experimental results.
Nature of Charge Transport in Quantum-Cascade Lasers / Iotti, Rita Claudia; Rossi, Fausto. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 87:14(2001), pp. 146603-1-146603-4. [10.1103/PhysRevLett.87.146603]
Nature of Charge Transport in Quantum-Cascade Lasers
IOTTI, Rita Claudia;ROSSI, FAUSTO
2001
Abstract
The first global quantum simulation of semiconductor-based quantum-cascade lasers is presented. Our three-dimensional approach allows us 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 and (ii) inclusion of carrier-phonon and carrier-carrier scattering gives excellent agreement with experimental results.Pubblicazioni consigliate
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https://hdl.handle.net/11583/1508063
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