Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angle
Laser–plasma instability (LPI) is one of the main obstacles to achieving predictable and reproducible fusion at high gain through laser-driven inertial confinement fusion (ICF). In this paper, for the first time, we show analytically and confirm with three-dimensional particle-in-cell simulations th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-05-01
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| Series: | Matter and Radiation at Extremes |
| Online Access: | http://dx.doi.org/10.1063/5.0136567 |
| _version_ | 1827892673336311808 |
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| author | Yi Guo Xiaomei Zhang Dirui Xu Xinju Guo Baifei Shen Ke Lan |
| author_facet | Yi Guo Xiaomei Zhang Dirui Xu Xinju Guo Baifei Shen Ke Lan |
| author_sort | Yi Guo |
| collection | DOAJ |
| description | Laser–plasma instability (LPI) is one of the main obstacles to achieving predictable and reproducible fusion at high gain through laser-driven inertial confinement fusion (ICF). In this paper, for the first time, we show analytically and confirm with three-dimensional particle-in-cell simulations that angular incoherence provides suppression of the instability growth rate that is additional to and much stronger than that provided by the well-known temporal and spatial incoherence usually used in ICF studies. For the model used in our calculations, the maximum field ratio between the stimulated Raman scattering and the driving pulses drops from 0.2 for a Laguerre–Gaussian pulse with a single nonzero topological charge to 0.05 for a super light spring with an angular momentum spread and random relative phases. In particular, angular incoherence does not introduce extra undesirable hot electrons. This provides a novel method for suppressing LPI by using light with an angular momentum spread and paves the way towards a low-LPI laser system for inertial fusion energy with a super light spring of incoherence in all dimensions of time, space, and angle, and may open the door to the use of longer-wavelength lasers for inertial fusion energy. |
| first_indexed | 2024-03-12T21:43:22Z |
| format | Article |
| id | doaj.art-75d6555581b04b43b4e830841c23e79d |
| institution | Directory Open Access Journal |
| issn | 2468-080X |
| language | English |
| last_indexed | 2024-03-12T21:43:22Z |
| publishDate | 2023-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | Matter and Radiation at Extremes |
| spelling | doaj.art-75d6555581b04b43b4e830841c23e79d2023-07-26T15:10:51ZengAIP Publishing LLCMatter and Radiation at Extremes2468-080X2023-05-0183035902035902-710.1063/5.0136567Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angleYi Guo0Xiaomei Zhang1Dirui Xu2Xinju Guo3Baifei Shen4Ke Lan5Department of Physics, Shanghai Normal University, Shanghai 200234, ChinaDepartment of Physics, Shanghai Normal University, Shanghai 200234, ChinaDepartment of Physics, Shanghai Normal University, Shanghai 200234, ChinaDepartment of Physics, Shanghai Normal University, Shanghai 200234, ChinaDepartment of Physics, Shanghai Normal University, Shanghai 200234, ChinaInstitute of Applied Physics and Computational Mathematics, Beijing 100094, ChinaLaser–plasma instability (LPI) is one of the main obstacles to achieving predictable and reproducible fusion at high gain through laser-driven inertial confinement fusion (ICF). In this paper, for the first time, we show analytically and confirm with three-dimensional particle-in-cell simulations that angular incoherence provides suppression of the instability growth rate that is additional to and much stronger than that provided by the well-known temporal and spatial incoherence usually used in ICF studies. For the model used in our calculations, the maximum field ratio between the stimulated Raman scattering and the driving pulses drops from 0.2 for a Laguerre–Gaussian pulse with a single nonzero topological charge to 0.05 for a super light spring with an angular momentum spread and random relative phases. In particular, angular incoherence does not introduce extra undesirable hot electrons. This provides a novel method for suppressing LPI by using light with an angular momentum spread and paves the way towards a low-LPI laser system for inertial fusion energy with a super light spring of incoherence in all dimensions of time, space, and angle, and may open the door to the use of longer-wavelength lasers for inertial fusion energy.http://dx.doi.org/10.1063/5.0136567 |
| spellingShingle | Yi Guo Xiaomei Zhang Dirui Xu Xinju Guo Baifei Shen Ke Lan Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angle Matter and Radiation at Extremes |
| title | Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angle |
| title_full | Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angle |
| title_fullStr | Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angle |
| title_full_unstemmed | Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angle |
| title_short | Suppression of stimulated Raman scattering by angularly incoherent light, towards a laser system of incoherence in all dimensions of time, space, and angle |
| title_sort | suppression of stimulated raman scattering by angularly incoherent light towards a laser system of incoherence in all dimensions of time space and angle |
| url | http://dx.doi.org/10.1063/5.0136567 |
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