标题： 纵向激光整形在激光尾波场加速器中 显示英文标题

标题： Longitudinal Laser Shaping in Laser Wakefield Accelerators

摘要： 我们研究了在激光等离子体相互作用中尾流激发的能量学，应用于激光尾波加速器。 我们发现，通过适当塑造驱动激光脉冲的纵向轮廓，可以最大化尾流振幅和加速效率（变压器比）。 相应的激光脉冲形状族是在激光等离子体相互作用的非线性区域中推导出来的。 这些形状通过允许激光脉冲内部均匀的光子减速，为尾场的大小和效率提供了理论上限。 我们还构建了可以在有限带宽激光系统中产生的实际最优脉冲形状。 显示英文摘要

摘要： We study the energetics of wake excitation during the laser-plasma interaction in application to laser wakefield accelerators. We find that both the wake amplitude and the accelerating efficiency (transformer ratio) can be maximized by properly shaping the longitudinal profile of the driving laser pulse. The corresponding family of laser pulse shapes is derived in the nonlinear regime of laser-plasma interaction. Such shapes provide theoretical upper limit on the magnitude of the wakefield and efficiency by allowing for uniform photon deceleration inside the laser pulse. We also construct realistic optimal pulse shapes that can be produced in finite-bandwidth laser systems.