This work describes the second and third orders of nonlinear optics properties of
unsubstituted chalcone (C 15 H 12 O) and mono-substituted chalcone (C 16 H 14 O 2) in
solution, using hyper-Rayleigh scattering and Z-Scan techniques to determine the first
molecular hyperpolarizability (β) and the two-photon absorption (2PA) cross section
respectively. β Values of 25.4× 10− 30 esu and 31.6× 10− 30 esu, for unsubstituted and
mono-substituted chalcone, respectively, dissolved in methanol have been obtained. The …