James A. Ibers, J.D. Swalen
Physical Review
Planar waveguides were made from a linear epoxy copolymer of bisphenol-A diglycidyl ether and amino-nitrotolane. The refractive indices, nTMand nTEand the electro-optic coefficients, r33and r13of the poled nonlinearoptical polymer films were determined by measurements of the waveguide modes of these films at a wavelength of 632.8 nm, and the results are reported for both electrode and corona poling. The ratio of the second-order susceptibilities was found to exceed significantly the theoretically expected value of 3. The restricted motion of the nonlinear chromophores during poling provides a possible explanation of this discrepancy. Introducing a restriction parameter v (0 ≤ v ≤ 1), we develop a simple model that can account for electro-optic coefficient ratios ranging from 3 to 6. © 1991 Optical Society of America.
James A. Ibers, J.D. Swalen
Physical Review
D.L. Allara, J.D. Swalen
Journal of Physical Chemistry
Barton A. Smith, Edward T. Samulski, et al.
Macromolecules
D. Morichøre, P.-A. Chollet, et al.
Journal of the Optical Society of America B: Optical Physics