Koen Clays, Tom Munters, Geert Olbrechts, and Andre Persoons, Laboratory of Chemical and Biological Dynamics, Dept. of Chemistry, Univ. of Leuven, Leuven, Belgium.
Hyper-Rayleigh scattering (HRS) has become widely accepted as an experimental technique for the determination of the first hyperpolarizability (second-order nonlinear polarizability), β, of molecules in solution. Apart from being simpler both theoretically and experimentally than electric-field-induced second-harmonic generation (EFISHG)—applicable to neutral, dipolar molecules only—HRS is the sole technique that gives a β value for ionic or octopolar species. The combination of HRS and EFISHG also allows different elements of the hyperpolarizability tensor to be analyzed.
Become a member of OSA or log in to view the full text of this article.
OSA Members get the full text of Optics & Photonics News, plus a variety of other member benefits.