2001/03/19 by Rita Claudia Iotti, Iotti, Rita Claudia, Fausto Rossi +1
Chemistry · Engineering · Physics and Astronomy · #FOS: Physical sciences #Laser Design and Applications #Materials Science (cond-mat.mtrl-sci) #Semiconductor Lasers and Optical Devices #Spectroscopy and Laser Applications #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0103391
4 pages, 3 figures
arxiv created 2001/03/19 · openalex publication_date 2001/03/19 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The first global simulation of semiconductor-based quantum-cascade lasers is presented; Our fully three-dimensional approach allows to study in a purely microscopic way -without resorting to phenomenological parameters- the current-voltage characteristics of state-of-the-art unipolar nanostructures. Based on the proposed theoretical scheme, we are able to give a definite answer to the long-standing controversial question: is charge transport in quantum-cascade lasers mainly coherent or incoherent? Our analysis clearly shows that a proper inclusion of carrier-phonon as well as carrier-carrier scattering within a semiclassical framework gives excellent agreement with experimental results.