Instrumentation, Techniques, and Measurement

Effective thermal expansion coefficient measurement of holographic material using total internal reflection heterodyne interferometry

[+] Author Affiliations
Ching-Tang Meng, Chih-Ching Cheng, Cheng-Chih Hsu

Yuan Ze University, Department of Photonics Engineering, Yuan-Tung Road, Chungli 32003, Taiwan

Chyan-Chyi Wu

Tamkang University, Department of Mechanical and Electromechanical Engineering, Yingzhuan Road, Tamsui, New Taipei City 25137, Taiwan

Opt. Eng. 54(9), 094105 (Sep 22, 2015). doi:10.1117/1.OE.54.9.094105
History: Received June 16, 2015; Accepted September 1, 2015
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Abstract.  The thermal optical properties of a holographic material were measured using total internal reflection heterodyne interferometry. The effective thermal expansion coefficients (ETECs) of the holographic material were determined at various exposure times. Our results showed that the holographic material exhibited a smaller thermal expansion coefficient (TEC) with a longer exposure time than those materials with short exposure times. Thus the diffraction power increased as the exposure time of the holographic material increased. Furthermore, the proposed method provides a highly accurate means of measurement for determination of the TEC. The theoretical ETEC error of the proposed method is better than 1.1×107 and the practical ETEC error under the precision measurement conditions can reach to 2.3×106.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Ching-Tang Meng ; Chih-Ching Cheng ; Cheng-Chih Hsu and Chyan-Chyi Wu
"Effective thermal expansion coefficient measurement of holographic material using total internal reflection heterodyne interferometry", Opt. Eng. 54(9), 094105 (Sep 22, 2015). ; http://dx.doi.org/10.1117/1.OE.54.9.094105


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