Paper
9 October 2000 Real-time measurement for the electro-optic coefficient of a poled-polymer film in ATR configuration
Bo Yuan, Zhuangqi Cao, Qishun Shen, Yingli Chen, X. Dou, Hideo Tashiro
Author Affiliations +
Proceedings Volume 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications; (2000) https://doi.org/10.1117/12.402602
Event: Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, 2000, Beijing, China
Abstract
A new method which bases on the attenuated total reflection (ATR) technique is developed to determine the electro-optic coefficient of a poled-polymer film. The proposed ATR arrangement consists of a coupling prism, and four film layers deposited directly onto the base of the prism in sequence. The four film layers are metal film (which serves as a top electrode), poled polymer film, buffer and base electrode, respectively. A convergent light beam covering a suitable angular range is incident onto the prism base to excite a guided wave mode and the reflected light beam is imaged by a CCD array. Then resonance angle of the guided wave mode can be determined from the position of the reflectance minimum. It is demonstrated that the applying electrical field will cause a minute change in the refractive index of a poled- polymer film, due to the Pockles effect, which will result in a shift of the resonance angle. In order to make the measurement more successful, computer image processing method and optical image spatial filter technology are used in our measurement.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bo Yuan, Zhuangqi Cao, Qishun Shen, Yingli Chen, X. Dou, and Hideo Tashiro "Real-time measurement for the electro-optic coefficient of a poled-polymer film in ATR configuration", Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); https://doi.org/10.1117/12.402602
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KEYWORDS
Electro optics

Prisms

Refractive index

Electro optic polymers

Polymers

Reflectivity

Spatial filters

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