Karakas, A.Karakaya, M.Taser, M.Ceylan, Y.Arof, A. K.El Kouari, Y.Sahraoui, B.2020-03-262020-03-2620170947-70471862-0760https://dx.doi.org/10.1007/s11581-016-1847-2https://hdl.handle.net/20.500.12395/35458International Symposium on Materials and Assets Integrity (ISMAI) on Advancements and Innovations in Materials and Asset Integrity Analysis and Management during 10th International Materials Technology Conference and Exhibition (IMTCE) -- MAY 16-18, 2016 -- PWTC, Kuala Lumpur, MALAYSIATo provide an insight into the microscopic second and third-order nonlinear optical (NLO) behavior of chlorophyll a and crocin, we have computed the electric dipole moments (mu), dispersion-free first hyperpolarizabilities (beta), frequency-dependent first and second (gamma) hyperpolarizabilities at 1064 nm wavelength area using time-dependent Hartree-Fock (TDHF) method. According to ab-initio calculation results, the examined compounds exhibit first and second hyperpolarizabilities with non-zero values, implying second and third-order NLO phenomena.en10.1007/s11581-016-1847-2info:eu-repo/semantics/closedAccessNonlinear optical propertiesElectric dipole momentFirst hyperpolarizabilitySecond hyperpolarizabilityTime-dependent Hartree-FockArticle232343346Q2WOS:000394152100012Q2