Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging
Accurate characterization of high-power laser parameters, especially the near-field and far-field distributions, is crucial for inertial confinement fusion experiments. In this paper, we propose a method for computationally reconstructing the complex amplitude of high-power laser beams using modifie...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2025-01-01
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| Series: | High Power Laser Science and Engineering |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S2095471925000155/type/journal_article |
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| author | Hua Tao Xiaoliang He Chengcheng Chang Liqing Wu Deng Liu Fei Chen Cheng Liu Jianqiang Zhu |
| author_facet | Hua Tao Xiaoliang He Chengcheng Chang Liqing Wu Deng Liu Fei Chen Cheng Liu Jianqiang Zhu |
| author_sort | Hua Tao |
| collection | DOAJ |
| description | Accurate characterization of high-power laser parameters, especially the near-field and far-field distributions, is crucial for inertial confinement fusion experiments. In this paper, we propose a method for computationally reconstructing the complex amplitude of high-power laser beams using modified coherent modulation imaging. This method has the advantage of being able to simultaneously calculate both the near-field (intensity and wavefront/phase) and far-field (focal-spot) distributions using the reconstructed complex amplitude. More importantly, the focal-spot distributions at different focal planes can also be calculated. To verify the feasibility, the complex amplitude optical field of the high-power pulsed laser was measured after static aberrations calibration. Experimental results also indicate that the near-field wavefront resolution of this method is higher than that of the Hartmann measurement. In addition, the far-field focal spot exhibits a higher dynamic range (176 dB) than that of traditional direct imaging (62 dB). |
| format | Article |
| id | doaj-art-20c2da3061aa4fd99e893bc168b21040 |
| institution | OA Journals |
| issn | 2095-4719 2052-3289 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | High Power Laser Science and Engineering |
| spelling | doaj-art-20c2da3061aa4fd99e893bc168b210402025-08-20T01:51:47ZengCambridge University PressHigh Power Laser Science and Engineering2095-47192052-32892025-01-011310.1017/hpl.2025.15Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imagingHua Tao0https://orcid.org/0000-0003-0293-0132Xiaoliang He1Chengcheng Chang2Liqing Wu3Deng Liu4Fei Chen5Cheng Liu6Jianqiang Zhu7National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaNational Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China School of Science, Jiangnan University, Wuxi, ChinaNational Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaNational Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaA Center of Equipment Development Department, Beijing, ChinaA Center of Equipment Development Department, Beijing, ChinaNational Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China School of Science, Jiangnan University, Wuxi, ChinaNational Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaAccurate characterization of high-power laser parameters, especially the near-field and far-field distributions, is crucial for inertial confinement fusion experiments. In this paper, we propose a method for computationally reconstructing the complex amplitude of high-power laser beams using modified coherent modulation imaging. This method has the advantage of being able to simultaneously calculate both the near-field (intensity and wavefront/phase) and far-field (focal-spot) distributions using the reconstructed complex amplitude. More importantly, the focal-spot distributions at different focal planes can also be calculated. To verify the feasibility, the complex amplitude optical field of the high-power pulsed laser was measured after static aberrations calibration. Experimental results also indicate that the near-field wavefront resolution of this method is higher than that of the Hartmann measurement. In addition, the far-field focal spot exhibits a higher dynamic range (176 dB) than that of traditional direct imaging (62 dB).https://www.cambridge.org/core/product/identifier/S2095471925000155/type/journal_articlecomplex amplitudefocal spothigh-power pulsed lasersmodified coherent modulation imagingnear-field intensitywavefront |
| spellingShingle | Hua Tao Xiaoliang He Chengcheng Chang Liqing Wu Deng Liu Fei Chen Cheng Liu Jianqiang Zhu Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging High Power Laser Science and Engineering complex amplitude focal spot high-power pulsed lasers modified coherent modulation imaging near-field intensity wavefront |
| title | Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging |
| title_full | Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging |
| title_fullStr | Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging |
| title_full_unstemmed | Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging |
| title_short | Computational near-field and far-field parameter measurement of high-power lasers using modified coherent modulation imaging |
| title_sort | computational near field and far field parameter measurement of high power lasers using modified coherent modulation imaging |
| topic | complex amplitude focal spot high-power pulsed lasers modified coherent modulation imaging near-field intensity wavefront |
| url | https://www.cambridge.org/core/product/identifier/S2095471925000155/type/journal_article |
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