22 September 2015 Effective thermal expansion coefficient measurement of holographic material using total internal reflection heterodyne interferometry
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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 1.1×10−7 and the practical ETEC error under the precision measurement conditions can reach to 2.3×10−6.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ching-Tang Meng, Ching-Tang Meng, Chih-Ching Cheng, Chih-Ching Cheng, Cheng-Chih Hsu, Cheng-Chih Hsu, Chyan-Chyi Wu, Chyan-Chyi Wu, } "Effective thermal expansion coefficient measurement of holographic material using total internal reflection heterodyne interferometry," Optical Engineering 54(9), 094105 (22 September 2015). https://doi.org/10.1117/1.OE.54.9.094105 . Submission:
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