论文标题
通过扭曲激光驱动的两个等离子体衰减产生轴向磁场
Generating axial magnetic fields via two plasmon decay driven by a twisted laser
论文作者
论文摘要
我们通过使用扭曲的光携带轨道角动量（OAM）来刺激等离子体中的两播衰减（TPD），提出了一种在非相关激光强度状态下产生轴向磁场的新方法。通过三维流体模拟和理论研究了由Laguerre-Gauss（LG）模式下的OAM光驱动的TPD的生长。基于电子等离子体波（EPWS）的假设是由许多局部平面波激光器局部驱动的，预测与泵激光场峰值振幅成正比的最大生长速率，并通过模拟验证。该理论和模拟都显示了从激光到TPD女儿EWP的OAM保护在其从激光到TPD子EWP的运输过程中。该理论通过TPD通过OAM吸收来预测〜40T轴向磁场的产生，该磁场在高能密度物理学领域具有透视应用。
We propose a new way of axial magnetic fields generation in a non-relativistic laser intensity regime by using a twisted light carrying orbital angular momentum (OAM) to stimulate two-plasmon decay (TPD) in a plasma. The growth of TPD driven by an OAM light in a Laguerre-Gauss (LG) mode is investigated through three dimensional fluid simulations and theory. A theory based on the assumption that the electron plasma waves (EPWs) are locally driven by a number of local plane-wave lasers predicts the maximum growth rate proportional to the peak amplitude of the pump laser field and is verified by the simulations. The OAM conservation during its transportation from the laser to the TPD daughter EWPs is shown by both the theory and the simulations. The theory predicts generation of ~40T axial magnetic fields through the OAM absorption via TPD, which has perspective applications in the field of high energy density physics.
