https://doi.org/10.1140/epjb/s10051-025-00880-y
Regular Article - Mesoscopic and Nanoscale Systems
Subtle modulation of the nonlinear optical properties of GaAs quantum dot by the interplay between noise and impurity extension
1
Department of Chemistry, Physical Chemistry Section, Visva-Bharati University, Birbhum, 731235, Santiniketan, West Bengal, India
2
Eklavya Model Residential School, West Burdwan, 713148, Kanksa, West Bengal, India
3
Department of Chemistry, Indian Institute of Technology, 502285, Hyderabad, Telangana, India
a pcmg77@rediffmail.com, manasghosh.chem@visva-bharati.ac.in
Received:
26
November
2024
Accepted:
5
February
2025
Published online:
14
February
2025
Current enquiry puts emphasis on unveiling the role of subtle interplay between spatial dissemination of impurity and Gaussian white noise on a few nonlinear optical (NLO) properties of the doped GaAs quantum dot (QD). The NLO properties include group index (GI), DC-Kerr effect (DCKE), electro-absorption coefficient (EAC) and optical gain (OG). GI, DCKE and EAC manifest red-shift with the enhancement of the spatial width of the dopant, both including and excluding noise. In case of OG, however, both with and without noise, the peak shift becomes non-uniform as the dopant stretch increases. The interplay between noise and the impurity spread becomes different for additive and multiplicative noise. Delicate modulation of impurity spread, in combination with the mode of introduction of noise, can control the regimes of fast and slow light in the system, the magnitudes of DCKE and EAC and can even cause maximization of OG and the current density in the vicinity of some typical spatial spread of the dopant.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
