Arbitrary-velocity laser pulses in plasma waveguides
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arXiv
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| Format: | Preprint |
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2025
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| author | Palastro, J. P. Miller, K. G. Edwards, M. R. Elliott, A. L. Mack, L. S. Singh, D. Thomas, A. G. R. |
| author_facet | Palastro, J. P. Miller, K. G. Edwards, M. R. Elliott, A. L. Mack, L. S. Singh, D. Thomas, A. G. R. |
| contents | Space-time structured laser pulses feature an intensity peak that can travel at an arbitrary velocity while maintaining a near-constant profile. These pulses can propagate in uniform media, where their frequencies are correlated with continuous transverse wavevectors, or in structured media, such as a waveguide, where their frequencies are correlated with discrete mode numbers. Here, we demonstrate the formation and propagation of arbitrary-velocity laser pulses in a plasma waveguide where the intensity can be orders of magnitude higher than in a solid-state waveguide. The flexibility to control the velocity of the peak intensity in a plasma waveguide enables new configurations for plasma-based sources of radiation and energetic particles, including THz generation, laser wakefield acceleration, and direct laser acceleration. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_15690 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Arbitrary-velocity laser pulses in plasma waveguides Palastro, J. P. Miller, K. G. Edwards, M. R. Elliott, A. L. Mack, L. S. Singh, D. Thomas, A. G. R. Plasma Physics Optics Space-time structured laser pulses feature an intensity peak that can travel at an arbitrary velocity while maintaining a near-constant profile. These pulses can propagate in uniform media, where their frequencies are correlated with continuous transverse wavevectors, or in structured media, such as a waveguide, where their frequencies are correlated with discrete mode numbers. Here, we demonstrate the formation and propagation of arbitrary-velocity laser pulses in a plasma waveguide where the intensity can be orders of magnitude higher than in a solid-state waveguide. The flexibility to control the velocity of the peak intensity in a plasma waveguide enables new configurations for plasma-based sources of radiation and energetic particles, including THz generation, laser wakefield acceleration, and direct laser acceleration. |
| title | Arbitrary-velocity laser pulses in plasma waveguides |
| topic | Plasma Physics Optics |
| url | https://arxiv.org/abs/2503.15690 |