Abstract
In this study, the influence of exciton spins relaxation (ESR) on spatial evolution of amplification without population inversion in a four-level GsAs multiple quantum wells is discussed theoretically. The role of propagation distance on absorption, dispersion and group index of weak probe light in the presence and absence of ESR is then analyzed. It is found that exciton spin relaxation (spin decoherence) which resulted from many-particle interaction in semiconductors have essential roles to adjusting the absorption and dispersion properties of weak probe light. Moreover, it is realized that the propagation distance in the presence of ESR can lead to switching between subluminal and superluminal light propagation. Our study provides a suitable treatment for the next generation of all-optical systems in semiconductor nanostructures.
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Study on the external ballistic measurement model and fitting algorithm of Integrated light screen array (20JK0692).
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Chen, R. Theoretical Investigation of Lasing without Inversion in a Multiple Quantum Well System. Int J Theor Phys 60, 3539–3547 (2021). https://doi.org/10.1007/s10773-021-04923-9
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DOI: https://doi.org/10.1007/s10773-021-04923-9