Wei Y, Ibison M, Xia G, Smith J D A, Welsch C P
Appl Opt. 2017 Oct 10;56(29):8201-8206. doi: 10.1364/AO.56.008201.
This paper investigates numerically dual-grating dielectric laser-driven accelerators driven by a pulse-front-tilted (PFT) laser, which extends the interaction length and boosts the electrons' energy gain. The optical system necessary to generate PFT laser beams with an ultrashort pulse duration of 100 fs is also studied in detail. Through two-dimensional particle-in-cell simulations, we show that such a PFT laser effectively increases the energy gain by (91±25) % compared to that of a normally incident laser with a waist radius of 50 μm for a 100-period dual-grating structure.
本文对由脉冲前沿倾斜（PFT）激光驱动的双光栅介质激光加速器进行了数值研究，该加速器延长了相互作用长度并提高了电子的能量增益。还详细研究了产生脉宽为100 fs的超短脉冲的PFT激光束所需的光学系统。通过二维粒子模拟，我们表明，对于100周期的双光栅结构，与腰半径为50μm的垂直入射激光相比，这种PFT激光有效地将能量增益提高了(91±25)%。
