Nonlinear optical properties and self-Kerr effect of Rydberg excitons

We show how to compute the nonlinear optical functions (absorption, reflection, and transmission) for a medium with Rydberg excitons (REs), including the effect of the coherence between the electron-hole pair and the electromagnetic field. Using the real density-matrix approach the analytical expres...

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Bibliographic Details
Published in:Physical review. B 2019-06, Vol.99 (24), p.1, Article 245206
Main Authors: Zielińska-Raczyńska, Sylwia, Czajkowski, Gerard, Karpiński, Karol, Ziemkiewicz, David
Format: Article
Language:English
Subjects:
Electromagnetic fields
Electromagnetic radiation
Excitons
Holes (electron deficiencies)
Mathematical analysis
Nonlinear analysis
Nonlinear optics
Nonlinearity
Optical properties
Phase modulation
Wave propagation
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Summary:We show how to compute the nonlinear optical functions (absorption, reflection, and transmission) for a medium with Rydberg excitons (REs), including the effect of the coherence between the electron-hole pair and the electromagnetic field. Using the real density-matrix approach the analytical expressions for nonlinear optical functions are obtained and numerical calculations are performed for Cu2O crystal where REs have been observed. We report a good agreement with recently published experimental data. Propagation of the electromagnetic waves in Rydberg exciton media with nonlinear effect is also discussed and the possibility of obtaining self-phase modulation due to Kerr nonlinearity is investigated.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.99.245206