Two-photon absorbtion in quantum dot with Yukawa potential
Main Article Content
Abstract
We study the nonlinear optical absorption properties of Yukawa potential quantum dots, especially focusing on the phenomenon of two-photon absorption (TPA) and using GaAs as illustrative material. The research results show a clear difference between intra-band and inter-band transitions: the intra-transitions have a narrower TPA spectrum and a higher maximum value because the transition energy has a smaller value compared to interregional one. Notably, the peak corresponding to is always located to the left of the peak corresponding to . Furthermore, the absorption peak position shows a different dependence on the displacement order, n, for intra- and inter-transitions. We also observe a blue-shift trend in the TPA spectrum with increasing values of both parameters and . These findings hold important promise for the development of improved photonic devices by optimizing the material properties of quantum dots.
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Keywords
Electron-photon interaction, quantum dots, two-photon absorption
References
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