Characteristics of Local Modulation Beam Propagating through Spatial Filter System
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 sy...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/2545923 |
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| _version_ | 1832551999349981184 |
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| author | Kewei You Yanli Zhang Xuejie Zhang Jianqiang Zhu |
| author_facet | Kewei You Yanli Zhang Xuejie Zhang Jianqiang Zhu |
| author_sort | Kewei You |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-2347568e897c4da09a62f7ef70c647ad |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-2347568e897c4da09a62f7ef70c647ad2025-02-03T05:59:44ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242018-01-01201810.1155/2018/25459232545923Characteristics of Local Modulation Beam Propagating through Spatial Filter SystemKewei You0Yanli Zhang1Xuejie Zhang2Jianqiang Zhu3Shanghai Institute of Optics and Fine Mechanics, Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Optics and Fine Mechanics, Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Optics and Fine Mechanics, Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Optics and Fine Mechanics, Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences, Shanghai 201800, ChinaAs 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.http://dx.doi.org/10.1155/2018/2545923 |
| spellingShingle | Kewei You Yanli Zhang Xuejie Zhang Jianqiang Zhu Characteristics of Local Modulation Beam Propagating through Spatial Filter System Advances in Condensed Matter Physics |
| title | Characteristics of Local Modulation Beam Propagating through Spatial Filter System |
| title_full | Characteristics of Local Modulation Beam Propagating through Spatial Filter System |
| title_fullStr | Characteristics of Local Modulation Beam Propagating through Spatial Filter System |
| title_full_unstemmed | Characteristics of Local Modulation Beam Propagating through Spatial Filter System |
| title_short | Characteristics of Local Modulation Beam Propagating through Spatial Filter System |
| title_sort | characteristics of local modulation beam propagating through spatial filter system |
| url | http://dx.doi.org/10.1155/2018/2545923 |
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