A detailed examination of the effect of loading density on the
hyperpolarizability of Disperse Red 19 (DR-19) in maleic anhydride copolymer has been
performed using hyper-Rayleigh scattering (HRS). The hyperpolarizability of the
polymeric solutions measured by HRS roughly tracks the concentration in the polymer,
but also shows evidence of interactions between the pendant DR-19 groups in the chain
as the distance between pendant groups decreases with increasing concentration.
© 2001 Optical Society of America