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Optical measurement of non-uniform electric field vector distribution in a dielectric liquid using triplet measurement system

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3 Author(s)
Ihori, H. ; Dept. of Mater. Sci. & Eng., Ehime Univ., Matsuyama, Japan ; Fujii, M. ; Arii, K.

We have carried out measurements of three-dimensional nonuniform electric field distribution using Kerr electrooptic measurement with a reconstruction technique. A conventional measurement system was composed of He-Ne laser, a polarizer, a quarter-wave plate, an experimental cell, an analyzer, and a photo-detector. For the measurement of an electric field vector distribution, it was necessary to measure light intensity with changing the optical axis of optical wedges, i.e., the polarizer, the quarter-wave plate and the analyzer. Moreover, the intensity measurement must be carried out at many points from θ = 0 to π around the electrode system. Therefore it took considerable time to measure the electric field distribution. We have improved the measurement system by a cell with six optical windows and three optical systems. Using the improved measuring system, it was possible to measure the non-uniform electric field vector distribution faster

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Dielectrics and Electrical Insulation, IEEE Transactions on  (Volume:9 ,  Issue: 1 )