Reflection of intense laser light from microstructured targets as a potential diagnostic of laser focus and plasma temperature
Reflection of intense laser light from microstructured targets as a potential diagnostic of laser focus and plasma temperature
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从微结构目标反射强激光作为激光焦点和等离子体温度的潜在诊断
DOI：
10.1017/hpl.2018.63
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发表时间：
2018
影响因子：
4.8
通讯作者：
Jarrett J
中科院分区：
文献类型：
--
作者：
Jarrett J
实验研究了强激光脉冲与微结构靶相互作用过程中反射光的空间强度分布，并用数值方法探索了将其应用于相互作用物理诊断的可能性。在具有规则凹槽和针状结构的目标的情况下，分别在镜面反射光中测量了衍射和散斑图案，突出了将其用作不断演变的等离子体表面的诊断的可能性。通过光线跟踪和数值模拟表明，对于小于靶结构周期的激光焦斑直径，反射光图样可能被用来诊断强激光焦点处的等离子体膨胀程度，进而诊断局部等离子体温度。当使用已知间距的规则结构时，反射图案还可以用于在高强度相互作用期间诊断激光焦点的大小。
The spatial-intensity profile of light reflected during the interaction of an intense laser pulse with a microstructured target is investigated experimentally and the potential to apply this as a diagnostic of the interaction physics is explored numerically. Diffraction and speckle patterns are measured in the specularly reflected light in the cases of targets with regular groove and needle-like structures, respectively, highlighting the potential to use this as a diagnostic of the evolving plasma surface. It is shown, via ray-tracing and numerical modelling, that for a laser focal spot diameter smaller than the periodicity of the target structure, the reflected light patterns can potentially be used to diagnose the degree of plasma expansion, and by extension the local plasma temperature, at the focus of the intense laser light. The reflected patterns could also be used to diagnose the size of the laser focal spot during a high-intensity interaction when using a regular structure with known spacing.
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影响因子：
8.6
作者：
J. Freidberg;R. W. Mitchell;R. Morse;L. Rudsinski
通讯作者：
J. Freidberg;R. W. Mitchell;R. Morse;L. Rudsinski
影响因子：
19.6
作者：
Dromey, B.;Zepf, M.;Norreys, P.
通讯作者：
Norreys, P.
影响因子：
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作者：
Mackinnon, A. J.;Patel, P. K.;Town, R. P. J.
通讯作者：
Town, R. P. J.
超强激光脉冲与超薄箔相互作用中的辐射压力驱动等离子体表面动力学
影响因子：
--
作者：
Gonzalez-Izquierdo B
通讯作者：
Gonzalez-Izquierdo B
相对论等离子体表面作为高效的二次谐波发生器
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
M. Streeter;P. Foster;F. Cameron;M. Borghesi;C. Brenner;D. Carroll;E. Divall;N. Dover;B. Dromey;P. Gallegos;J. Green;S. Hawkes;C. Hooker;S. Kar;P. McKenna;S. Nagel;Z. Najmudin;C. Palmer;R. Prasad;K. Quinn;P. Rajeev;A. Robinson;L. Romagnani;J. Schreiber;C. Spindloe;S. Ter;O. Tresca;M. Zepf;D. Neely
通讯作者：
D. Neely