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SM ISO690:2012 KLYUKANOV, Alexandr, GURĂU, Virginia. Multiplasmon laser gain spectra of quantum wells. In: Journal of Optoelectronics and Advanced Materials, 2005, vol. 7, pp. 871-875. ISSN 1454-4164. |
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Journal of Optoelectronics and Advanced Materials | ||||||
Volumul 7 / 2005 / ISSN 1454-4164 | ||||||
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Pag. 871-875 | ||||||
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Results of computer simulations concerning gain spectra of In 0.05Ga 0.95As 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 In 0.05Ga 0.95As quantum wells is given. |
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Cuvinte-cheie Laser gain, Light absorption, Multi-plasmon - optical transitions, quantum wells |
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