Figure 6

Electric field vector evaluation. Signs “ + ” and “−” indicate the polarity of the stripe electrode. Distributions of the maxima of Pockels transmittance \(T_{max} \left( {x_{1}^{{\prime}} ,x_{3}^{{\prime}} } \right)\) (a) and corresponding polarizer angle \(\beta_{max} \left( {x_{1}^{{\prime}} ,x_{3}^{{\prime}} } \right)\) (b) acquired by fitting the Pockels transmittance images using Eq. (18). Distribution of the coefficient of determination \(R^{2} \left( {x_{1}^{{\prime}} ,x_{3}^{{\prime}} } \right)\) of the fitting is shown in (c). Electric field directional angle \(\varphi\) distribution (d) was determined from \(\beta_{max}\) based on the relation from Fig. 4. Electric field magnitude and direction distribution are shown in (e). Space charge distribution \(\rho \left( {x_{1}^{{\prime}} ,x_{3}^{{\prime}} } \right)\) was calculated using Gauss law (f). Black areas denote the damaged parts along the edges of the sample.