论文标题
通过密度梯度等离子体的激光脉冲压缩到Zettawatt激光器
Laser pulse compression by a density gradient plasma for exawatt to zettawatt lasers
论文作者
论文摘要
我们提出了一种用于激光脉冲压缩的新方法，该方法使用具有密度梯度的等离子体羽流的空间变化。这种新颖的方案可用于压缩超高幂激光器。长时间频率的频率，激光脉冲从过度密度的等离子体的等离子体坡道上反射出来。随着密度的纵向增加，激光脉冲领先部分的高频光子比低频光子更深，脉冲以类似的方式压缩，以压缩the鼠。使用一维（1-d）粒子中的（PIC）模拟代码的原则模拟证明了2.35 ps激光脉冲的压缩为10.3 fs，压缩比为225。由于等离子体具有强大的耐受性，并且可以抗高强度的高强度，与chireped-pulsep besemplification nosemplification nosemplification（cpa）相同，因为ANDICENTICE（cpa）的方法[1] A A AD A IDY INDOCTICERICCEICERICCERICCE [1] Zettawatt Peak Power激光器。
We propose a new method for laser pulse compression that uses the spatially varying dispersion of a plasma plume with a density gradient. This novel scheme can be used to compress ultrahigh power lasers. A long, negatively frequency-chirped, laser pulse reflects off the plasma ramp of an over-dense plasma. As the density increases longitudinally the high frequency photons at the leading part of the laser pulse propagates more deeply than low frequency photons, the pulse is compressed in a similar way to compression off a chirped mirror. Proof-of-principle simulations, using a one-dimensional (1-D) particle-in-cell (PIC) simulation code demonstrates the compression of 2.35 ps laser pulse to 10.3 fs, with a compression ratio of 225. As plasmas is robust and resistant to high intensities, unlike gratings in a chirped-pulse amplification (CPA) technique [1], the method could be used as a compressor to reach exawatt or zettawatt peak power lasers.
