A new technique for three-dimensional (3D) electric-field (e-field) vector measurement is presented. Three laser beams with different propagation paths in an electro-optic (EO) crystal were used to resolve 3D components of e-field vectors. We adopted a special geometric shape of bismuth silicon oxide EO crystal so that the three beams would propagate within it. A sensitivity of 0.6 V/cm √Hz was achieved. A commercial Ansoft Maxwell 3D field simulator was also used to verify our measurements.
© 1999 Optical Society of America
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(130.6010) Integrated optics : Sensors
(190.1900) Nonlinear optics : Diagnostic applications of nonlinear optics
(230.2090) Optical devices : Electro-optical devices
Wen-Kai Kuo, Yang-Tung Huang, and Sheng-Lung Huang, "Three-dimensional electric-field vector measurement with an electro-optic sensing technique," Opt. Lett. 24, 1546-1548 (1999)