首页 » 文章 » 文章详细信息
Advances in Condensed Matter Physics Volume 2018 ,2018-01-01
Characteristics of Local Modulation Beam Propagating through Spatial Filter System
Research Article
Kewei You 1 , 2 , 3 Yanli Zhang 1 , 2 Xuejie Zhang 1 , 2 Jianqiang Zhu 1 , 2
Show affiliations
DOI:10.1155/2018/2545923
Received 2017-02-05, accepted for publication 2017-04-13, Published 2017-04-13
PDF
摘要

As local defects may significantly harm beam quality and affect safe operation, a systematic analysis of the ability of a spatial filter to alleviate these adverse effects is required. Thus, the evolutional characteristics of a beam modulated by a local defect propagating through a spatial filter system at an image reply plane and a downstream plane are analyzed in detail. Modulation stripes appear at the image reply plane; these are caused by the pinhole cutoff effect. The modulation degree increases with increasing defect size. The maximum intensification factor can reach 3.2 under certain conditions. Thus, the defect size should be restricted to a reasonable size for safe operation with a specified pinhole size. Moreover, a maximal value appears at the downstream plane, and the intensity enhances with increasing defect size. To ensure beam quality, the maximum allowable defect size and angle of the spatial filter should meet special constraints. The maximum allowable defect size is calculated based on practical configuration parameters.

授权许可

Copyright © 2018 Kewei You et al. 2018
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

图表

Spatial imaging configuration.

Intensification factor varying with increasing defect size at image relay plane.

Intensity profiles at image relay plane. (a)R = 1.5 mm, (b) R = 2.1 mm, and (c) R = 3.2 mm.

Intensity profiles at image relay plane. (a)R = 1.5 mm, (b) R = 2.1 mm, and (c) R = 3.2 mm.

Intensity profiles at image relay plane. (a)R = 1.5 mm, (b) R = 2.1 mm, and (c) R = 3.2 mm.

Experimental results. (a) One-dimensional intensity distributions. Blue dotted lines represent experimental results, and red solid lines represent calculation results. (b) Light intensity distributions acquired by CCD.

Intensification factor varying with distance from image relay plane.

Maximum intensification factor and corresponding location varying with defect size along downstream light field: (a) maximum intensification factor and (b) corresponding location.

Maximum intensification factor and corresponding location varying with defect size along downstream light field: (a) maximum intensification factor and (b) corresponding location.

通讯作者

Jianqiang Zhu.Shanghai Institute of Optics and Fine Mechanics, Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences, Shanghai 201800, China, cas.cn;National Laboratory on High Power Laser and Physics, Shanghai 201800, China.jqzhu@mail.shcnc.ac.cn

推荐引用方式

Kewei You,Yanli Zhang,Xuejie Zhang,Jianqiang Zhu. Characteristics of Local Modulation Beam Propagating through Spatial Filter System. Advances in Condensed Matter Physics ,Vol.2018(2018)

您觉得这篇文章对您有帮助吗?
分享和收藏
16

是否收藏?

参考文献
[1] B. Y. Wang, J. Y. Zhang, S. Shi, K. W. You. et al.(2016). Effects of side subsurface defects induced by CNC machine on the gain spatial distribution in neodymium phosphate glass. High Power Laser Science Engineering.4(1). DOI: 10.1117/12.638571.
[2] M. L. Spaeth, K. R. Manes, J. Honig. (2016). Cleanliness for the NIF 1 laser amplifiers. Fusion Science and Technology.69(1):250-264. DOI: 10.1117/12.638571.
[3] J. T. Hunt, P. A. Renard, W. W. Simmons. (1977). Improved performance of fusion lasers using the imaging properties of multiple spatial filters. Applied Optics.16(4):779-782. DOI: 10.1117/12.638571.
[4] H. Bercegol, G. J. Exarhos, A. H. Guenther, P. R. Bouchut. et al.The impact of laser damage on the lifetime of optical components in fusion lasers. .5273. DOI: 10.1117/12.638571.
[5] J. T. Hunt, J. A. Glaze, W. W. Simmons, P. A. Renard. et al.(1978). Suppression of self-focusing through low-pass spatial filtering and relay imaging. Applied Optics.17(13):2053-2057. DOI: 10.1117/12.638571.
[6] J. E. Murray, D. Milam, C. D. Boley, K. G. Estabrook. et al.(2000). Spatial filter pinhole development for the national ignition facility. Applied Optics.39(9):1389-1405. DOI: 10.1117/12.638571.
[7] P. P. Sun, D. Liu, Y. L. Zhang, X. Y. Li. et al.(2011). Evolution of low-frequency noise passing through a spatial filter in a high power laser system. Science China Physics, Mechanics & Astronomy.54(3):411-415. DOI: 10.1117/12.638571.
[8] S. Mainguy, B. Le Garrec, M. Josse. Downstream impact of flaws on the LIL/LMJ laser lines. . DOI: 10.1117/12.638571.
[9] J. Honig. (2004). Cleanliness improvements of National Ignition Facility amplifiers as compared to previous large-scale lasers. Optical Engineering.43(12):2904-2911. DOI: 10.1117/12.638571.
[10] M. Bray, A. Liard, G. Chabassier. Laser MegaJoule optics (I): new methods of optical specification. .3739:449-460. DOI: 10.1117/12.638571.
[11] M. L. Spaeth, K. R. Manes, D. H. Kalantar. (2016). Description of the NIF Laser. Fusion Science and Technology.69:25-145. DOI: 10.1117/12.638571.
[12] D. F. Zhao, L. Wang, Z. Q. Lin, P. Shao. et al.(2015). SG-II-Up prototype final optics assembly: optical damage and clean-gas control. High Power Laser Science and Engineering.3. DOI: 10.1117/12.638571.
[13] P. M. Celliers, K. G. Estabrook, R. J. Wallace, J. E. Murray. et al.(1998). Spatial filter pinhole for high-energy pulsed lasers. Applied Optics.37(12):2371-2378. DOI: 10.1117/12.638571.
[14] R. J. Korniski, L. R. Gardner, K. P. Thompson, English. et al.Spatial filter lens design for the main laser of the National ignition facility. .3482. DOI: 10.1117/12.638571.
[15] Y. Gao, B. Zhu, D. Liu, Z. Lin. et al.(2009). Propagation of flat-topped multi-Gaussian beams through a double-lens system with apertures. Optics Express.17(15):12753-12766. DOI: 10.1117/12.638571.
[16] M. Born, E. Wolf. (1999). Principles of optics: electromagnetic theory of propagation, interference and diffraction of light. DOI: 10.1117/12.638571.
[17] H. J. Liu, F. Jing, Q. Li, Z. T. Peng. et al.(2009). The effect of spatial filter pinhole on output beams quality in high power laser. Journal of Yunnan University.184(27). DOI: 10.1117/12.638571.
[18] G. Feng, S. Zhou. (2009). Discussion of comprehensive evaluation on laser beam quality. Zhongguo Jiguang.36(7):1643-1653. DOI: 10.1117/12.638571.
文献评价指标
浏览 57次
下载全文 4次
评分次数 0次
用户评分 0.0分
分享 16次