Improvement of accuracy of the measurement of electric field distributions using the Kerr electrooptic effect and computed tomography

✍ Scribed by Naoya Masuichi; Masaharu Fujii; Haruo Ihori

• Publisher: Wiley (John Wiley & Sons)
• Year: 2012
• Tongue: English
• Weight: 468 KB
• Volume: 95
• Category: Article
• ISSN: 1942-9533
• DOI: 10.1002/ecj.10404

✦ Synopsis

Abstract

Computed tomography (CT) has been used for industrial application as well as its principal development in the medical field. We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectrics using an original method based on the electrooptic Kerr effect and the CT method. In applying the CT method to the reconstruction of the electric field, a principle of the CT method has been faithfully observed, which has been one cause of error. Specifically, the region passed through by the light in the measurements was not equal to the reconstructed region and the electric field was reconstructed without consideration of the value of cells outside the region for reconstruction. To solve these problems, we suggest an improved algorithm for reconstruction using the concepts which we called “actual region projection data” and “extension of region for reconstruction.” Simulations and experiments were used to investigate the usefulness of the improved method. © 2012 Wiley Periodicals, Inc. Electron Comm Jpn, 95(2): 8–15, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.10404