2007/09/22 by I. A. Dmitriev, И. А. Дмитриев, R. A. Suris
Chemistry · Engineering · Physics and Astronomy · #Semiconductor Lasers and Optical Devices #Semiconductor Quantum Structures and Devices #Spectroscopy and Laser Applications #cond-mat.other
paper · pdf · doi:10.1016/j.physe.2007.09.055
4 pages, 2 figures; Proceedings of MSS13 to be published in Physica E
openalex publication_date 2007/09/22 · arxiv created 2007/11/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Quantum cascade lasers are recognized as propitious candidates for future terahertz optoelectronics. Here we demonstrate several definite advantages of quantum dot cascade structures over quantum well devices, which suffer fundamental performance limitations owing to continuous carrier spectrum. The discrete spectrum of quantum dots opens an opportunity to control the non-radiative relaxation and optical loss and also provides for more flexibility in the choice of an optical and electrical design of the laser.