论文标题
增强的强耦合刺激的brirouin扩增在拉曼扩增的辅助
Enhanced strong-coupling stimulated Brillouin amplification assisted by Raman amplification
论文作者
论文摘要
通过补充拉曼扩增，实现了强耦合刺激的刺激的布里鲁因散射（SC-SB）的较高强度。在新方案中，拉曼泵激光首先放大了均匀等离子体中的种子脉冲，然后SC-SBS泵激光持续了不均匀等离子体的扩增，以抑制泵激光的自发不稳定。种子激光的强度更高，种子激光的持续时间比具有相同入射能的纯SC-SBS方案短，而能量转化效率并未显着降低。我们还发现，SC-SBS扩增是通过拉曼扩增的πpulse播种的。从包膜耦合方程，VLASOV模拟和二维粒子中的模拟（PIC）模拟获得的结果相互吻合。该方案是改善SC-SBS扩增并且在实验中易于实现的简单有效方法。
Higher intensity of strong-coupling stimulated Brillouin scattering (SC-SBS) amplification is achieved by supplementary Raman amplification. In the new scheme, a Raman pump laser first amplifies the seed pulse in the homogeneous plasma, then a SC-SBS pump laser continues the amplification in the inhomogeneous plasma in order to suppress the spontaneous instability of pump lasers. The intensity of seed laser gets higher and the duration of seed laser gets shorter than that in the pure SC-SBS scheme with the same incident energy, while the energy conversion effciency is not significantly reduced. We also found that the SC-SBS amplification is seeded by the πpulse of Raman amplification. The results obtained from envelope coupling equations, Vlasov simulations and two-dimensional particle-in-cell(PIC) simulations agree with each other. This scheme is a simple and effective way to improve the SC-SBS amplification and is easy to implement in experiments.
