Abstract
Third-order nonlinearities of the solutions of various organic molecules are evaluated by the measurement of optical Kerr effect near the absorption edge of each compound, varying the wavelength of nanosecond laser. Aromatic acetylenes, imidazoles, organic donors or acceptors used for organic conductive compounds, organo-metallic complexes, cyanine dyes, azo dyes, helicenes, and the other π-conjugated compounds are measured. From the results, aromatic acetylenes, imidazoles, and cyanine dyes are selected as the compounds with the large χ(3) values.
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