Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
70 (1991), S. 1656-1659
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report on experimental investigations of electro-optic polymers, carried out in connection with the development of a contactless measuring technique for electrical signals in printed circuit boards. We describe the preparation of the poled polymers and the measurement of the electro-optic properties. The polymer samples consist of poly methyl methacrylate doped with N,N-dihexyl-4-amino-4'-nitrostilbene (DHANS). For a sinusoidal electrical field with a frequency of 1.325 kHz applied to the polymer sample we observe a change of the refractive index linear in the electrical field, the poling field, and the DHANS concentration. Using a dc field, we obtain a considerably larger field-induced change of the refractive index which is quadratic in the field, linear in the DHANS concentration, and nearly independent of the poling field. For both cases a figure of merit is defined and experimentally determined. With the present experimental setup, a minimum detectable change of the refractive index requires an ac voltage amplitude of 85 V and a dc voltage of 20 V.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.349532
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