Injection and Acceleration of Electrons by Radially Polarized Laser Pulses in a Plasma Channel
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915647128076288 |
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| author | Hadjisolomou, P. Valenta, P. Shaisultanov, R. Jeong, T. M. Gorlova, D. Ridgers, C. P. Bulanov, S. V. |
| author_facet | Hadjisolomou, P. Valenta, P. Shaisultanov, R. Jeong, T. M. Gorlova, D. Ridgers, C. P. Bulanov, S. V. |
| contents | We consider injection and subsequent acceleration of electrons in narrow plasma channels irradiated by linearly and radially polarized ultraintense laser pulses. Using three-dimensional particle-in-cell simulations, we show that radially polarized beams significantly promote electron release from the channel walls and lead to enhanced injection. We compare an f/10 linearly polarized laser beam with two radially polarized cases: one focused more tightly (f/5) to match peak intensity, and one at equal f/10 to capture polarization effects. The radially polarized f/10 case injects approximately one-third more charge than the linearly polarized case, while the f/5 radially polarized case outperforms the linearly polarized one by about a factor of two in terms of maximum electron energy. These results highlight polarization and focusing geometry as key parameters for optimizing laser-driven electron acceleration setups. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_01737 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Injection and Acceleration of Electrons by Radially Polarized Laser Pulses in a Plasma Channel Hadjisolomou, P. Valenta, P. Shaisultanov, R. Jeong, T. M. Gorlova, D. Ridgers, C. P. Bulanov, S. V. Plasma Physics We consider injection and subsequent acceleration of electrons in narrow plasma channels irradiated by linearly and radially polarized ultraintense laser pulses. Using three-dimensional particle-in-cell simulations, we show that radially polarized beams significantly promote electron release from the channel walls and lead to enhanced injection. We compare an f/10 linearly polarized laser beam with two radially polarized cases: one focused more tightly (f/5) to match peak intensity, and one at equal f/10 to capture polarization effects. The radially polarized f/10 case injects approximately one-third more charge than the linearly polarized case, while the f/5 radially polarized case outperforms the linearly polarized one by about a factor of two in terms of maximum electron energy. These results highlight polarization and focusing geometry as key parameters for optimizing laser-driven electron acceleration setups. |
| title | Injection and Acceleration of Electrons by Radially Polarized Laser Pulses in a Plasma Channel |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2512.01737 |