HIGHLIGHTS
- who: Lucie Prussel and collaborators from the Eu0301cole Polytechnique, Institut Polytechnique Paris, , Italy have published the research work: Ab initio nonlinear optics in solids: Linear Electro-Optic Effect and Electric-Field Induced Second-Harmonic Generation, in the Journal: (JOURNAL)
- what: Within this approach, SHG is described with different levels of approximation for the electronic correlations: independent pArticle approximation (IPA), random-phase approximation (RPA) and excitons . Concerning EFISH the authors show how it is possible to remove the mathematical divergences in the frequency-dependent susceptibility that caused until now many difficulties for numerical calculations. In Fig . . .
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