4 April 2005 Effects of the electric field poling procedure on electro-optic coefficient for guest-host nonlinear optic polymers
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Abstract
The procedure for increasing the temperature and electric field to set poling conditions for guest-host nonlinear optic polymers was evaluated. Specifically, the order of the two variables was alternated and the poling efficiency was evaluated by comparing the electro-optic coefficient, r33 for both procedures. Two host polymers, poly(methyl)methacrylate (PMMA) and poly[bisphenol A carbonate-co-4,4'(3,3,5-triethyl cyclohexylidene) diphenol] (APC) were doped with 10% (by weight) of the chromophore disperse red 1 (DR1). Single layer films were spin deposited onto a glass substrate with patterned indium tin oxide (ITO) as the bottom electrode and patterned gold as the top electrode. With the final set poling temperature and electric field held constant, each system was poled under two different poling procedures. The first procedure was to increase the temperature at a constant rate first and then increase the electric field at a constant rate to the final set poling conditions, and conversely, the second procedure was to increase the electric field at a constant rate, at room temperature, first and then increase the temperature at a constant rate to the final set poling conditions. An increase in poling efficiency was found for the 'Voltage then Temperature' procedure in both guest-host systems with an increase in r33 values of 38% to 43%. While this dramatic increase is not expected for every system, it shows that there is an additional variable of poling procedure that can be modified for enhancing the efficiency of poling.
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Joshua A. Hagen, James G. Grote, John S. Zetts, Darnell E. Diggs, Robert L. Nelson, Frank Kenneth Hopkins, Perry P. Yaney, Alex K.-Y. Jen, and Larry Raymond Dalton "Effects of the electric field poling procedure on electro-optic coefficient for guest-host nonlinear optic polymers", Proc. SPIE 5724, Organic Photonic Materials and Devices VII, (4 April 2005); doi: 10.1117/12.593643; https://doi.org/10.1117/12.593643
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