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We report on the solvent influence on the two-photon absorption spectra of p-nitroaniline. Measurements of the two-photon absorption cross section values were performed in three solvents (1,4-dioxane, propylene carbonate, dimethyl sulfoxide) using the Z-scan technique. The most important finding in this report is the observation that two-photon absorption cross section value, corresponding to the...
A considerable number of polar organic molecules have been assessed for applications in nonlinear optics including electro optic modulation, second harmonic generation, three dimensional optical data storage, optical switching and optical limiting. Such materials generally contain donor and acceptor groups positioned at either end of a suitable conjugation path. The magnitude of the nonlinear coefficient...
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