Electro-optic heterodyne interferometer.
We propose a new configuration for using a triangle-wave signal to drive the electro-optic modulator in an electro-optic heterodyne interferometer system. The new configuration is adapted to measure the phase retardation of a wave plate and the optical rotation angle of a chiral medium. By adding optic elements, the second-harmonic component amplitude of the interferometer photodetector output signal became proportional to the phase retardation or optical rotation angle of the samples being tested.
Kuo
Wen-Kai
WK
National Formosa University, Institute of Electro-Optical and Materials Science, Huwei, Yunlin, Taiwan. wkkuo@nfu.edu.tw
Kuo
Jen-Yu
JY
Huang
Cheng-Yung
CY