Sign of the optical Stark effect of excitonic polaritons in ZnSe

The dynamical Stark effect of excitons is investigated in high-quality ZnSe layers by means of one-color pump-and-probe spectroscopy. The Stark shift of free excitons is measured under excitation into the absorption-free energy region between the fundamental 1S and 2S resonances. The sign of the Sta...

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Bibliographic Details
Published in:Solid state communications 1996, Vol.99 (9), p.607-611
Main Authors: Neukirch, U, Wundke, K
Format: Article
Language:English
Subjects:
A. semiconductors
Condensed matter: electronic structure, electrical, magnetic, and optical properties
D. optical properties
E. nonlinear optics
Exact sciences and technology
Ii-vi semiconductors
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
Physics
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Summary:The dynamical Stark effect of excitons is investigated in high-quality ZnSe layers by means of one-color pump-and-probe spectroscopy. The Stark shift of free excitons is measured under excitation into the absorption-free energy region between the fundamental 1S and 2S resonances. The sign of the Stark shift is found to be negative which directly contrasts with theoretical predictions based on Hartree-Fock calculations for free excitons.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(96)00361-4