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Stimulated Brillouin Amplification with Flying Focus
Zhaohui Wu, Xiaoming Zeng, Zhaoli Li, Xiaodong Wang, Xiao Wang, Jie Mu, Yanlei Zuo, Kainan Zhou, Hao Peng, C. Riconda, S. Weber
https://arxiv.org/abs/2508.04121

Stimulated Brillouin Amplification with Flying Focus
Material damage thresholds pose a fundamental limit to chirped pulse amplification (CPA) in high-power laser systems. Plasma-based amplification via stimulated Brillouin scattering (SBS) offers a damage-free alternative, yet its effectiveness has been hindered by instabilities that constrain interaction length. In this study, we report the first experimental demonstration of SBS amplification driven by a flying focus in a 3-mm plasma channel. The flying focus is generated using chromatic aberra…