A method for using electric-field-induced second-harmonic generation to determine microscopic elastic constants of dye-doped polymer systems is presented. This method allows for a direct measurement of the interaction between an optically nonlinear dye molecule and a surrounding optically linear host material. The bulk elastic constant determined by extrapolating the microscopic values is found to be ten times smaller than that determined through the use of a standard mechanical technique, suggesting that the physical interaction of the dye and the host is weak.
© 1990 Optical Society of America
Original Manuscript: May 18, 1989
Manuscript Accepted: September 11, 1989
Published: January 1, 1990
M. G. Kuzyk, R. C. Moore, and L. A. King, "Second-harmonic-generation measurements of the elastic constant of a molecule in a polymer matrix," J. Opt. Soc. Am. B 7, 64-72 (1990)