Klyukanov, AlexandrGurau, Virginia2024-09-102024-09-102005KLYUKANOV, Alexandr și Virginia GURĂU. Multiplasmon laser gain spectra of quantum wells. Journal of Optoelectronics and Advanced Materials, 2005. vol. 7, pp. 871-875. ISSN 1454-4164.1454-4164https://msuir.usm.md/handle/123456789/16015KLYUKANOV, Alexandr și Virginia GURĂU. Multiplasmon laser gain spectra of quantum wells. Journal of Optoelectronics and Advanced Materials, 2005. vol. 7, pp. 871-875. ISSN 1454-4164.Results of computer simulations concerning gain spectra of In0.05Ga0.95As quantum wells are presented. A novel multi-plasmon concept of a light absorption and laser gain of low- dimensional structures is comprehensively discussed. A generalized theory of multi-plasmon optical transitions in direct gap quantum wells is developed using the cumulant expansion method and fluctuation-dissipation theorem. Multi-quantum LO-phonon-plasmon optical transitions are investigated with account on coherent memory effects in quantum wells. It is shown that a red shift of the absorption edge can be caused not only by the well-known mechanism of band gap shrinkage but also by multi-plasmon transitions. The comparison with other theories and experimental data measured in In0.05Ga0.95As quantum wells is given.enQuantum wellsMulti-plasmon – optical transitionsLight absorptionLaser gainArticle