Relativistic plasma shutter for ultraintense laser pulses.
Relativistic plasma shutter for ultraintense laser pulses.
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DOI：
10.1063/1.3139860
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发表时间：
2009-05
影响因子：
4
通讯作者：
S. Reed;T. Matsuoka;S. Bulanov;M. Tampo;V. Chvykov;G. Kalintchenko;P. Rousseau;V. Yanovsky;R. Kodama;D. Litzenberg;K. Krushelnick;A. Maksimchuk
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文献类型：
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作者：
S. Reed;T. Matsuoka;S. Bulanov;M. Tampo;V. Chvykov;G. Kalintchenko;P. Rousseau;V. Yanovsky;R. Kodama;D. Litzenberg;K. Krushelnick;A. Maksimchuk
提出并测试了一种相对论等离子体快门技术，以消除高强度激光脉冲的 100 ps 以下基座。快门是放置在感兴趣目标之前的超薄箔片。当激光的前沿电离快门材料时，它将膨胀成相对论性的低密度等离子体，允许峰值脉冲传播通过，同时拒绝低强度基座。通过测量加速质子光谱中的特征特征和 30 个 TW 脉冲与超薄箔相互作用的方向性以及支持流体动力学和细胞内颗粒模拟，证明了激光时间对比度的增加。
A relativistic plasma shutter technique is proposed and tested to remove the sub-100 ps pedestal of a high-intensity laser pulse. The shutter is an ultrathin foil placed before the target of interest. As the leading edge of the laser ionizes the shutter material it will expand into a relativistically underdense plasma allowing for the peak pulse to propagate through while rejecting the low intensity pedestal. An increase in the laser temporal contrast is demonstrated by measuring characteristic signatures in the accelerated proton spectra and directionality from the interaction of 30 TW pulses with ultrathin foils along with supporting hydrodynamic and particle-in-cell simulations.