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The precise angle measurement and transmission technology have been widely used in the precision measurement, aerospace, military, biomedicine and other devices, which are based on the polarized light and magneto-optical modulation. This method has the characteristics of no rigid connection required, long distance transmission, high precision, etc. However, the azimuth information measurement method needs the assistance of complex servo tracking system according to the orthogonal extinction principle of polarization prism, meanwhile, the measurement time is longer, which reduces reliability and reaction sensitivity of the system. In order to improve the measurement accuracy and fast response capability of the system, a fast space goniometry method is proposed through the Wollaston prism polarizing beam splitter, with which the azimuth is directly calculated according to the two light intensities. The measurement time can be shortened, and the accuracy is improved by the use of magneto-optical modulation technology. The rapid space angle measuring system needs to realize the measurement function in a certain translation range, which requires the beam to have a certain coverage area in the receiving unit. However, the system is limited by size and volume of the device; we can only choose to expand the incident beam. Therefore, when the beam is incident onto the receiving unit, some incident angle and azimuth, that is, non-vertical incidence will be produced. However, the polarization of the non-vertically incident light passing through the system will change and polarization aberration exists, which will lead to measurement error. In this paper, the beam passes through the polarizing prism in a certain range of azimuths and incident angles, and the polarized light tracing method and the boundary condition of the electromagnetic field are used to study and simulate the polarization change and distribution of the outgoing beam. The changes of different incident azimuths and angles can be simulated through the translation of receiving unit, and the azimuths can be measured indirectly by using self-collimation theodolite and right angle prism. By comparing the measured azimuths under the translational and centering conditions, the influence of polarization aberration on the angle measuring system and the correctness of the theoretical analysis are verified. It is concluded that when the azimuth angle is 0, the measurement error is small; when the azimuth is 90, the measurement error is largest, meanwhile the measurement error will increase with the translation distance becoming longer (i.e., the incident angle). According to the comparison between the experimental data and the simulation results, the existing problems are pointed out, and the corresponding improvement measures are proposed. The results of this work have some significance in guiding the optimization of the system structure, and the further improvement inthe performance of the system.
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Keywords:
- polarized light /
- azimuth measurement /
- polarization aberration /
- Glan-Taylor prism
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[2] Shen X J, Ma C W, Dong X N 2001 Acta Phot. Sin. 30 892 (in Chinese) [申小军, 马彩文, 董晓娜 2001 光子学报 30 892]
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[7] Yang Z Y, Huang X X, Zhou Z F, Zhang Z L 2012 Acta Opt. Sin. 32 0112006 (in Chinese) [杨志勇, 黄先祥, 周召发, 张志利 2012 光学学报 32 0112006]
[8] Yang Z Y, Huang X X, Zhou Z F, Zhang Z L 2012 Acta Opt. Sin. 32 1012001 (in Chinese) [杨志勇, 黄先祥, 周召发, 张志利 2012 光学学报 32 1012001]
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[14] Lu W G 2013 Ph. D. Dissertation (Xi'an: Xi'an Institute of Optics and Precision Mechanics) (in Chinese) [陆卫国 2013 博士学位论文 (西安: 西安光学精密机械研究所)]
[15] Yang Y F, Yan C X, Hu C H, Wu C J 2016 Acta Phot. Sin. 36 1106003 (in Chinese) [杨宇飞, 颜昌翔, 胡春晖, 吴从均 2016 光子学报 36 1106003]
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[19] Lam W S T, Chipman R 2015 Appl. Opt. 54 3236
[20] Wu H Y, Zhang C M, Zhao B C 2009 Acta Phys. Sin. 58 930 (in Chinese) [吴海英, 张淳民, 赵葆常 2009 58 930]
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[22] Zhang M R, He Z Q, Wang T, Tian J S 2017 Acta Phys. Sin. 66 084202 (in Chinese) [张敏睿, 贺正权, 汪韬, 田进寿 2017 66 084202]
[23] Yun G, McClain S C, Chipman R A 2011 Appl. Opt. 50 2866
[24] Wu H Y, Zhang C M, Zhao B C 2008 Acta Phys. Sin. 57 3499 (in Chinese) [吴海英, 张淳民, 赵葆常 2008 57 3499]
[25] Shen W M, Jin Y X, Shao Z X 2003 Acta Phys. Sin. 52 3049 (in Chinese) [沈为民, 金永兴, 邵中兴 2003 52 3049]
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[27] Wu H Y, Zhang C M, Zhao B C, Li Y C 2009 Acta Phys. Sin. 58 1642 (in Chinese) [吴海英, 张淳民, 赵葆常, 李英才 2009 58 1642]
[28] Liu C, Cen Z F, Li X T, Xu W C, Shang H B, Neng F, Chen L 2012 Acta Phys. Sin. 61 134201 (in Chinese) [刘超, 岑兆丰, 李晓彤, 许伟才, 尚红波, 能芬, 陈立 2012 61 134201]
[29] Mu Y K, Zhang C M, Zhao B C 2009 Acta Phys. Sin. 58 3877 (in Chinese) [穆延魁, 张淳民, 赵葆常 2009 58 3877]
[30] Xiao M S, Li C Y, Wu Y M, Lu W G, Wang H X 2015 Infrar. Laser Eng. 44 611 (in Chinese) [肖茂森, 李春艳, 吴易明, 陆卫国, 王海霞 2015 红外与激光工程 44 611]
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[1] Dong X N, Gao L M, Shen X J, Chen L Y 2001 Acta Phot. Sin. 30 1389 (in Chinese) [董晓娜, 高立民, 申小军, 陈良益 2001 光子学报 30 1389]
[2] Shen X J, Ma C W, Dong X N 2001 Acta Phot. Sin. 30 892 (in Chinese) [申小军, 马彩文, 董晓娜 2001 光子学报 30 892]
[3] Wu Y M 2009 Ph. D. Dissertation (Xi'an: Xi'an Institute of Optics and Precision Mechanics) (in Chinese) [吴易明 2009 博士学位论文 (西安: 西安光学精密机械研究所)]
[4] Wu Y M, Gao L M, Chen L Y 2008 Infrar. Laser Eng. 37 525 (in Chinese) [吴易明, 高立民, 陈良益 2008 红外与激光工程 37 525]
[5] Yang Z H, Huang X X, Zhou Z F, Zhang Z L 2012 Acta Opt. Sin. 32 1212006 (in Chinese) [杨志勇, 黄先祥, 周召发, 张志利 2012 光学学报 32 1212006]
[6] Yang Z H, Cao W, Wu F C 2015 Acta Opt. Sin. 25 s112003 (in Chinese) [杨志勇, 蔡伟, 伍樊成 2015 光学学报 25 s112003]
[7] Yang Z Y, Huang X X, Zhou Z F, Zhang Z L 2012 Acta Opt. Sin. 32 0112006 (in Chinese) [杨志勇, 黄先祥, 周召发, 张志利 2012 光学学报 32 0112006]
[8] Yang Z Y, Huang X X, Zhou Z F, Zhang Z L 2012 Acta Opt. Sin. 32 1012001 (in Chinese) [杨志勇, 黄先祥, 周召发, 张志利 2012 光学学报 32 1012001]
[9] Yang Z Y, Zhou Z F, Zhang Z L 2012 Opt. Precis. Eng. 20 692 (in Chinese) [杨志勇, 周召发, 张志利 2012 光学 20 692]
[10] Shen X, Liang Z C 2014 Optron. Lasers 25 1535 (in Chinese) [沈骁, 梁忠诚 2014 光电子 25 1535]
[11] Yang Z Y, Huang X X, Zhou Z F, Zhang Z L 2011 Acta Opt. Sin. 31 1112008 (in Chinese) [杨志勇, 黄先祥, 周召发, 张志利 2011 光学学报 31 1112008]
[12] Lu W G, Wu Y M, Gao L M, Xiao M S, Wang H X 2013 Opt. Precis. Eng. 21 539 (in Chinese) [陆卫国, 吴易明, 高立民, 肖茂森, 王海霞 2013 光学精密工程 21 539]
[13] Lu W G, Wu Y M, Gao L M, Li C Y, Xiao M S 2014 Infrar. Laser Eng. 43 2198 (in Chinese) [陆卫国, 吴易明, 高立民, 李春艳, 肖茂森 2014 红外与激光工程 43 2198]
[14] Lu W G 2013 Ph. D. Dissertation (Xi'an: Xi'an Institute of Optics and Precision Mechanics) (in Chinese) [陆卫国 2013 博士学位论文 (西安: 西安光学精密机械研究所)]
[15] Yang Y F, Yan C X, Hu C H, Wu C J 2016 Acta Phot. Sin. 36 1106003 (in Chinese) [杨宇飞, 颜昌翔, 胡春晖, 吴从均 2016 光子学报 36 1106003]
[16] Li Y H, Hao X, Shi Z Y, Shuai S J, Wang L 2015 Acta Phys. Sin. 64 154214 (in Chinese) [李旸晖, 郝翔, 史召邑, 帅少杰, 王乐 2015 64 154214]
[17] Yun G, Crabtree K, Chipman R A 2011 Opt. Lett. 36 4062
[18] Xu J, Liu F, Liu J T, Wang J Y, Han P L, Zhou Z H, Shao X P 2016 Acta Phys. Sin. 65 134201 (in Chinese) [许洁, 刘飞, 刘杰涛, 王娇阳, 韩平丽, 周淙浩, 邵晓鹏 2016 65 134201]
[19] Lam W S T, Chipman R 2015 Appl. Opt. 54 3236
[20] Wu H Y, Zhang C M, Zhao B C 2009 Acta Phys. Sin. 58 930 (in Chinese) [吴海英, 张淳民, 赵葆常 2009 58 930]
[21] Yun G, Crabtree K, Chipman R A 2011 Appl. Opt. 50 2855
[22] Zhang M R, He Z Q, Wang T, Tian J S 2017 Acta Phys. Sin. 66 084202 (in Chinese) [张敏睿, 贺正权, 汪韬, 田进寿 2017 66 084202]
[23] Yun G, McClain S C, Chipman R A 2011 Appl. Opt. 50 2866
[24] Wu H Y, Zhang C M, Zhao B C 2008 Acta Phys. Sin. 57 3499 (in Chinese) [吴海英, 张淳民, 赵葆常 2008 57 3499]
[25] Shen W M, Jin Y X, Shao Z X 2003 Acta Phys. Sin. 52 3049 (in Chinese) [沈为民, 金永兴, 邵中兴 2003 52 3049]
[26] Zhang C M, Liu N, Wu F Q 2010 Acta Phys. Sin. 59 949 (in Chinese) [张淳民, 刘宁, 吴福全 2010 59 949]
[27] Wu H Y, Zhang C M, Zhao B C, Li Y C 2009 Acta Phys. Sin. 58 1642 (in Chinese) [吴海英, 张淳民, 赵葆常, 李英才 2009 58 1642]
[28] Liu C, Cen Z F, Li X T, Xu W C, Shang H B, Neng F, Chen L 2012 Acta Phys. Sin. 61 134201 (in Chinese) [刘超, 岑兆丰, 李晓彤, 许伟才, 尚红波, 能芬, 陈立 2012 61 134201]
[29] Mu Y K, Zhang C M, Zhao B C 2009 Acta Phys. Sin. 58 3877 (in Chinese) [穆延魁, 张淳民, 赵葆常 2009 58 3877]
[30] Xiao M S, Li C Y, Wu Y M, Lu W G, Wang H X 2015 Infrar. Laser Eng. 44 611 (in Chinese) [肖茂森, 李春艳, 吴易明, 陆卫国, 王海霞 2015 红外与激光工程 44 611]
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