Abstract
We present a simple method to measure the contribution from acoustic phonons to the linear electro-optic effect. A step voltage with a short rise time (600 ps) is applied to the sample, and the electro-optic response is measured in the time domain. For the organic salt 4--dimethylamino---methyl-stilbazolium tosylate (DAST), we obtained a negative contribution of to the overall electro-optic coefficient of . The electro-optic response was limited only by the rise time of the applied voltage, which corresponds to a frequency of 1 GHz.
© 1997 Optical Society of America
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