On the dipole moments and first-order hyperpolarizability of N,N-bis(4-bromobutyl)-4-nitrobenzenamine

Experimental Investigation of First Hyperpolarizability by a Prism Coupling Waveguide Method

“…1. The density of the PMMA-DR1 is ¼ 1:18 g/cm 3 . The number density N of the chromophore is calculated to be 0.92 mol/L by the molecular weight method.…”

“…1,2) Secondorder nonlinear optical polymers derive their NLO properties from the first hyperpolarizability () of their chromophores. 3) Chromophores exhibiting the largest dispersionfree hyperpolarizability ( 0 ) values are considered the best candidates to be tested in prototypical device configurations. 4) Many methods have been proposed to measure the first hyperpolarizability at different wavelengths, such as hyper-Rayleigh scattering (HRS), 5) electric-field-induced second-harmonic generation (EFISH), 6) and quadratic electroabsorption (QEA).…”