An electric-field-induced second-harmonic-generation signal in a nematic liquid crystal is used to map the electric field in an integrated-circuit-like sample. Since the electric-field-induced second-harmonic-generation signal intensity exhibits a strong dependence on the polarization of the incident laser beam, both the amplitude and the orientation of the electric field vectors can be measured. Combined with scanning second-harmonic-generation microscopy, three-dimensional electric field distribution can be easily visualized with high spatial resolution of the order of 1 μm .
© 2003 Optical Society of America
I-Hsiu Chen, Shi-Wei Chu, Francois Bresson, Ming-Chun Tien, Jin-Wei Shi, and Chi-Kuang Sun, "Three-dimensional electric field visualization utilizing electric-field-induced second-harmonic generation in nematic liquid crystals," Opt. Lett. 28, 1338-1340 (2003)