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毛玻璃转速对干涉条纹成像质量的影响

Effect of speed of rotated diffuser on image quality of interference fringes

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摘要

针对大平面菲索干涉图像的相干噪声问题,采用旋转毛玻璃片的方法改变光束的相干性,来降低干涉系统的噪声。通过对毛玻璃的转速与条纹对比度和系统信噪比之间的关系进行仿真,获得最佳干涉条纹状态所需要的毛玻璃控制参数。在不同控制参数下获取干涉图像,并分别对各图像的条纹对比度和系统信噪比进行分析。研究结果表明,增加的毛玻璃转速,虽然在一定程度上降低了干涉图像的对比度,但却有效地提高了信噪比,便于后续的干涉图像处理。

Abstract

Since the coherent noise affected the quality of the Fizeau’s interferograms in the large aperture, the coherence of the beam was changed by rotated diffuser to reduce the noise of the interfering system. The relationships among the speed of the rotated diffuser, the contrast of the fringes and the SNR of the system were simulated. Then, the control parameters of rotated diffuser would be required in the optimum interference fringe. The interference images were obtained under different control parameters, and the fringe contrast and system SNR of each image were analyzed. The results showed that the contrast can be reduced by increasing the speed of the rotated diffuser in a certain extent, but the SNR can be improved effectively and it was convenient to process the interference image later.

Newport宣传-MKS新实验室计划
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中图分类号:O436.1

DOI:10.12086/oee.2018.170492

所属栏目:科研论文

基金项目:科技部国际合作项目(2015DFA10360);总装备部项目(JCKY2016208A001)

收稿日期:2017-09-12

修改稿日期:2017-11-21

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作者单位    点击查看

张佳莹:西安工业大学陕西省薄膜技术与光学检测重点实验室,陕西 西安 710021
王红军:西安工业大学陕西省薄膜技术与光学检测重点实验室,陕西 西安 710021
朱学亮:西安工业大学陕西省薄膜技术与光学检测重点实验室,陕西 西安 710021
刘丙才:西安工业大学陕西省薄膜技术与光学检测重点实验室,陕西 西安 710021
田爱玲:西安工业大学陕西省薄膜技术与光学检测重点实验室,陕西 西安 710021

联系人作者:张佳莹(937069596@qq.com)

备注:张佳莹(1992-),女,硕士研究生,主要从事光学检测技术方面的研究

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引用该论文

Zhang Jiaying,Wang Hongjun,Zhu Xueliang,Liu Bingcai,Tian Ailing. Effect of speed of rotated diffuser on image quality of interference fringes[J]. Opto-Electronic Engineering, 2018, 45(1): 170492

张佳莹,王红军,朱学亮,刘丙才,田爱玲. 毛玻璃转速对干涉条纹成像质量的影响[J]. 光电工程, 2018, 45(1): 170492

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