高分辨磁光显微术探测致密固体等离子体周围的巨磁场
Mapping giant magnetic fields around dense solid plasmas by high resolution magneto-optical microscopy
摘要：
利用高灵敏度磁光显微镜研究了强p偏振激光（~10^{16} W.cm^{-2}，100 fs）辐照磁带产生的致密固体等离子体周围的磁场分布。我们提出了巨型轴向磁场的证据，并首次绘制出这些磁场的空间分布图。通过使用轴向磁场分布作为诊断工具，我们发现的证据与等离子体的角动量。我们相信这项研究对于研究磁性材料在超短强激光脉冲影响下的磁化或去磁过程具有重要意义。
英文摘要：
We investigate distribution of magnetic fields around dense solid plasmas generated by intense p-polarized laser (~10^{16} W.cm^{-2}, 100 fs) irradiation of magnetic tapes, using high sensitivity magneto optical microscopy. We present evidence for giant axial magnetic fields and map out for the first time the spatial distribution of these fields. By using the axial magnetic field distribution as a diagnostic tool we uncover evidence for angular momentum associated with the plasma. We believe this study holds significance for investigating the process under which a magnetic material magnetizes or demagnetizes under the influence of ultrashort intense laser pulses.
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