Effects of moderate bandwidth on laser absorption and stimulated Raman sidescattering
We report experimental results regarding laser-plasma instabilities (LPI) developed by monochromatic and broadband green lasers with moderate bandwidths (0.2% and 0.6%) at intensities of 5–7 $\times 10^{14}$ W cm ^−2 in the interest of inertial fusion energy. Angular-resolved distributions of scat...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/ada629 |
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| author | Ning Kang Yao Zhao Anle Lei Huiya Liu Fujian Li Guoxiao Xu Honghai An Jun Xiong Ruirong Wang Zhiyong Xie Zhiheng Fang Wei Wang Lailin Ji Shenlei Zhou Guangyue Hu Jiwei Li Lifeng Wang Yanqi Gao Xiuguang Huang Sizu Fu |
| author_facet | Ning Kang Yao Zhao Anle Lei Huiya Liu Fujian Li Guoxiao Xu Honghai An Jun Xiong Ruirong Wang Zhiyong Xie Zhiheng Fang Wei Wang Lailin Ji Shenlei Zhou Guangyue Hu Jiwei Li Lifeng Wang Yanqi Gao Xiuguang Huang Sizu Fu |
| author_sort | Ning Kang |
| collection | DOAJ |
| description | We report experimental results regarding laser-plasma instabilities (LPI) developed by monochromatic and broadband green lasers with moderate bandwidths (0.2% and 0.6%) at intensities of 5–7 $\times 10^{14}$ W cm ^−2 in the interest of inertial fusion energy. Angular-resolved distributions of scattered light were diagnosed, which demonstrated that the laser absorption rate is enhanced by increasing the laser bandwidth. This enhancement is primarily owing to the mitigation of stimulated Brillouin scattering. Meanwhile, the inherent temporal fluctuation of laser intensity caused by bandwidth results in more intense stimulated Raman scattering, particularly regarding the sidescattering. These findings indicate that the requirement of laser bandwidth used in inertial fusion energy should exceed the moderate level to achieve comprehensive mitigation of LPI. |
| format | Article |
| id | doaj-art-6a9ac4b0fa2b444a9c74b33a1b50345f |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-6a9ac4b0fa2b444a9c74b33a1b50345f2025-01-20T10:18:42ZengIOP PublishingNuclear Fusion0029-55152025-01-0165202604210.1088/1741-4326/ada629Effects of moderate bandwidth on laser absorption and stimulated Raman sidescatteringNing Kang0https://orcid.org/0000-0003-1232-3301Yao Zhao1Anle Lei2Huiya Liu3https://orcid.org/0000-0001-7621-4644Fujian Li4Guoxiao Xu5Honghai An6Jun Xiong7Ruirong Wang8Zhiyong Xie9Zhiheng Fang10Wei Wang11Lailin Ji12Shenlei Zhou13Guangyue Hu14https://orcid.org/0000-0002-7491-0627Jiwei Li15https://orcid.org/0000-0003-0318-0732Lifeng Wang16https://orcid.org/0000-0001-6359-8212Yanqi Gao17Xiuguang Huang18Sizu Fu19Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, ChinaSchool of Science, Shenzhen Campus of Sun Yat-sen University , Shenzhen 518107, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaKey Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaKey Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics , Chinese Academy of Sciences, Shanghai 201800, ChinaCAS Key Laboratory of Geospace Environment, School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, ChinaInstitute of Applied Physics and Computational Mathematics , Beijing 100094, ChinaInstitute of Applied Physics and Computational Mathematics , Beijing 100094, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaShanghai Institute of Laser Plasma, China Academy of Engineering Physics , Shanghai 201800, ChinaWe report experimental results regarding laser-plasma instabilities (LPI) developed by monochromatic and broadband green lasers with moderate bandwidths (0.2% and 0.6%) at intensities of 5–7 $\times 10^{14}$ W cm ^−2 in the interest of inertial fusion energy. Angular-resolved distributions of scattered light were diagnosed, which demonstrated that the laser absorption rate is enhanced by increasing the laser bandwidth. This enhancement is primarily owing to the mitigation of stimulated Brillouin scattering. Meanwhile, the inherent temporal fluctuation of laser intensity caused by bandwidth results in more intense stimulated Raman scattering, particularly regarding the sidescattering. These findings indicate that the requirement of laser bandwidth used in inertial fusion energy should exceed the moderate level to achieve comprehensive mitigation of LPI.https://doi.org/10.1088/1741-4326/ada629moderate bandwidthlaser absorptionstimulated Raman sidescatteringinertial fusion energy |
| spellingShingle | Ning Kang Yao Zhao Anle Lei Huiya Liu Fujian Li Guoxiao Xu Honghai An Jun Xiong Ruirong Wang Zhiyong Xie Zhiheng Fang Wei Wang Lailin Ji Shenlei Zhou Guangyue Hu Jiwei Li Lifeng Wang Yanqi Gao Xiuguang Huang Sizu Fu Effects of moderate bandwidth on laser absorption and stimulated Raman sidescattering Nuclear Fusion moderate bandwidth laser absorption stimulated Raman sidescattering inertial fusion energy |
| title | Effects of moderate bandwidth on laser absorption and stimulated Raman sidescattering |
| title_full | Effects of moderate bandwidth on laser absorption and stimulated Raman sidescattering |
| title_fullStr | Effects of moderate bandwidth on laser absorption and stimulated Raman sidescattering |
| title_full_unstemmed | Effects of moderate bandwidth on laser absorption and stimulated Raman sidescattering |
| title_short | Effects of moderate bandwidth on laser absorption and stimulated Raman sidescattering |
| title_sort | effects of moderate bandwidth on laser absorption and stimulated raman sidescattering |
| topic | moderate bandwidth laser absorption stimulated Raman sidescattering inertial fusion energy |
| url | https://doi.org/10.1088/1741-4326/ada629 |
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