论文标题
内表面等离子体激发是激光诱导的周期性等离子体结构的根本原因，并在透明介电体积的体积中进行自组织的纳米形成
Internal surface plasmon excitation as the root cause of laser-induced periodic plasma structure and self-organized nanograting formation in the volume of transparent dielectric
论文作者
论文摘要
考虑到产生小规模电离场不稳定性的可能性，进行了透明介电（融合二氧化硅）在透明介电（熔融二氧化硅）体积中产生的光放电动力学的计算机模拟。通过使用Maxwell Garnett公式，使用纳米分散的异质培养基的模型来考虑融合二氧化硅中小的外国夹杂物的存在。计算的结果使得可以揭示以前未知的物理机制，该物理机制决定了在每个单个分解脉冲中形成的有序等离子体场结构的周期性，并且是暴露于一系列重复脉冲的介电材料中有序体积纳米形成的根本原因。在这种机制中，有两个要点是决定性的：（i）在崩溃波前部的形成薄的过度血浆层与事件激光脉冲的反向构造，并在此前部对“内部表面等离子体”的激发激发，从而导致对相应的播种的空间差异和平衡的旋转的空间态度的迅速扩增，从而使素的随机平衡构成A的形式相反。 （电介质中的波长为0.7）。
A computer simulation of dynamics of an optical discharge produced in the volume of a transparent dielectric (fused silica) by a focused femtosecond laser pulse was carried out taking into account the possibility of developing small-scale ionization-field instability. The presence of small foreign inclusions in the fused silica was taken into account with the model of a nanodispersed heterogeneous medium by using Maxwell Garnett formulas. The results of the calculations made it possible to reveal the previously unknown physical mechanism that determines the periodicity of the ordered plasma-field structure that is formed in each single breakdown pulse and is the root cause of the ordered volume nanograting formation in dielectric material exposed to a series of repeated pulse. Two main points are decisive in this mechanism: (i) the formation of a thin overcritical plasma layer at the breakdown wave front counter-propagated to the incident laser pulse and (ii) the excitation of the "internal surface plasmon" at this front, resulting in a rapid amplification of the corresponding spatial harmonic of random seed perturbations in the plasma and formation of a contrast structure with a period equal to the wavelength of the surface plasmon (0.7 of the wavelength in dielectric).
