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Proceedings Paper

Method for measuring retardation of infrared wave-plate by modulated-polarized visible light
Author(s): Ying Zhang; Feijun Song
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Paper Abstract

A new method for precisely measuring the optical phase retardation of wave-plates in the infrared spectral region is presented by using modulated-polarized visible light. An electro-optic modulator is used to accurately determine the zero point by the frequency-doubled signal of the Modulated-polarized light. A Babinet-Soleil compensator is employed to make the phase delay compensation. Based on this method, an instrument is set up to measure the retardations of the infrared wave-plates with visible region laser. Measurement results with high accuracy and sound repetition are obtained by simple calculation. Its measurement precision is less than and repetitive precision is within 0.3%.

Paper Details

Date Published: 27 November 2012
PDF: 8 pages
Proc. SPIE 8559, Information Optics and Optical Data Storage II, 855903 (27 November 2012); doi: 10.1117/12.999702
Show Author Affiliations
Ying Zhang, Beijing Univ. of Posts and Telecommunications, (China)
Minzu Univ. of China (China)
Feijun Song, China Daheng Group, Inc. (China)


Published in SPIE Proceedings Vol. 8559:
Information Optics and Optical Data Storage II
Feijun Song; Hui Li; Xiudong Sun; Francis T. S. Yu; Suganda Jutamulia; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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