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3 December 2014 Influence analysis of measuring beam's divergence on optics transmissivity testing
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As the development of high powered laser system, the measuring accuracy of optic’s transmissivity need to be improved in order to guarantee all the optics’ quality. This paper analyses all the factors which largely influence the testing accuracy of optics transmissivity when using the spectralphotometer. Experiments are carried out to verify all the deduced results. The results show that the accuracy of wavelength, error of incident angle and divergence of measuring beam would influence the testing result of transmissivity, and the divergence of measuring beam would contrubite to the largest error. Therefore, the testing accuracy could be greatly increased by decreasing the divergence angle of measuring beam.
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Xu Liu, Yong Liu, Hongzhen Jiang, Fanglan Zheng, Huan Ren, Yi Yang, Deqiang Yu, and Yurong Ma "Influence analysis of measuring beam's divergence on optics transmissivity testing", Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 92970X (3 December 2014);

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