Second- and third-order nonlinear optical properties of mono-substituted terpenoid-like chalcones

• Two-photon absorption study of terpenoid-like chalcones derivatives. First hyperpolarizability at 1064 nm Phenomenological approaches for two-photon and first hyperpolarizability. ( Δ μ 01 Evaluation difference permanent dipole moment non-fluorescent compounds. Organic molecules exhibiting second third-order nonlinear optical properties (NLOP) allow several applications in optics photonics. Among the class organic compounds, derivatives constitute a suitable choice as materials, given possibility obtaining wide range compounds that can be used biophotonic applications. In this way, here we present first-order molecular (2PA) cross-section derivatives, aiming therapeutic window. The 2PA spectra were evaluated employing femtosecond tunable Z-Scan technique from 480 to 850 nm, was determined using Hyper-Rayleigh scattering (HRS) technique. Moreover, modeled by sum-over-states (SOS) approach undamped phenomenological model, respectively, providing new insights into compoundś structure relationship. Results showed substituent features, such electron-donating or withdrawing ability, associated with magnitude. Regarding HRS results, it possible compare state both approaches, combining two experimental routes determine photophysical parameters revealing structure-relationship increase NLOP near-infrared region.