Resonant Excitation of Surface Plasmon for Wakefield Acceleration by Beating GW Lasers on Smooth Cylindrical Surface
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arXiv
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| Format: | Preprint |
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2026
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| author | Lei, Bifeng Zhang, Hao Bonatto, Alexandre Liu, Bin Resta-Lopez, Javier Zepf, Matt Xia, Guoxing Welsch, Carsten |
| author_facet | Lei, Bifeng Zhang, Hao Bonatto, Alexandre Liu, Bin Resta-Lopez, Javier Zepf, Matt Xia, Guoxing Welsch, Carsten |
| contents | We present a theoretical and numerical study of resonant surface-plasmon (SP) excitation driven by the beating of two co-propagating laser pulses on a smooth cylindrical plasma-vacuum interface. Analytical expressions for the SP dispersion relation, field amplitude, geometric coupling factor, and resonance conditions are derived and validated by fully three-dimensional particle-in-cell simulations. We reveal that curvature-induced geometric effects can substantially modify the SP dispersion and enable resonant matching by laser beat waves. This is inaccessible in planar geometries or with a single laser. Under matched resonance conditions, a high-amplitude SP-based wakefield can be generated by a few gigawatt lasers, placing this mechanism within reach of state-of-the-art fibre lasers. It therefore opens a route toward portable laser-driven plasma wakefield accelerators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_12789 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Resonant Excitation of Surface Plasmon for Wakefield Acceleration by Beating GW Lasers on Smooth Cylindrical Surface Lei, Bifeng Zhang, Hao Bonatto, Alexandre Liu, Bin Resta-Lopez, Javier Zepf, Matt Xia, Guoxing Welsch, Carsten Plasma Physics Accelerator Physics Applied Physics Classical Physics We present a theoretical and numerical study of resonant surface-plasmon (SP) excitation driven by the beating of two co-propagating laser pulses on a smooth cylindrical plasma-vacuum interface. Analytical expressions for the SP dispersion relation, field amplitude, geometric coupling factor, and resonance conditions are derived and validated by fully three-dimensional particle-in-cell simulations. We reveal that curvature-induced geometric effects can substantially modify the SP dispersion and enable resonant matching by laser beat waves. This is inaccessible in planar geometries or with a single laser. Under matched resonance conditions, a high-amplitude SP-based wakefield can be generated by a few gigawatt lasers, placing this mechanism within reach of state-of-the-art fibre lasers. It therefore opens a route toward portable laser-driven plasma wakefield accelerators. |
| title | Resonant Excitation of Surface Plasmon for Wakefield Acceleration by Beating GW Lasers on Smooth Cylindrical Surface |
| topic | Plasma Physics Accelerator Physics Applied Physics Classical Physics |
| url | https://arxiv.org/abs/2602.12789 |