高功率laser辐照下微尺度等离子体波导中的自旋轨道相互作用
Spin-orbit interaction in a high-power laser irradiated micro-scale plasma waveguide
摘要：
光携带角动量作为自旋和轨道分量。光的自旋-轨道相互作用（SOI）是指自旋（左或右圆偏振）影响空间自由度的现象。最近，人们对SOI的兴趣激增，因为它提供了对亚波长尺度偏振光行为的物理洞察，并允许对光进行自旋控制。大多数研究都是在低强度下进行的，这使得SOI在相对论性激光-等离子体相互作用中所起的作用，其特征在于非线性，了解较少。在这里，使用3D粒子模拟，我们报告SOI效应在这个前所未有的制度。具体而言，照射微尺度等离子体波导的圆偏振高斯激光驱动自旋控制的手性表面波，允许反射的谐波光子获得轨道角动量（OAM）。这些效应在极紫外区产生强烈的光学涡旋--这是一个具有重要基础和应用物理潜力的领域。
英文摘要：
Light carries angular momentum as spin and orbital components. The spin-orbit interaction (SOI) of light refers to phenomena in which the spin (left or right circular polarisation) affects the spatial degrees of freedom. Recently, interest in SOI has surged, as it provides physical insight into the behaviour of polarised light at subwavelength scales, and allows for spin-controlled manipulation of light. Most studies are performed with low intensity, leaving the role SOI plays in the relativistic laser-plasma interaction, characterised by nonlinearity, less understood. Here, using 3D particle-in-cell simulations, we report SOI effects in this unprecedented regime. Specifically, a circularly polarised Gaussian laser irradiating a micro-scale plasma waveguide drives a spin-controlled chiral surface wave, allowing the reflected harmonic photons to gain orbital angular momentum (OAM). These effects produce intense optical vortices in the extreme ultraviolet regime - an area of significant fundamental and applied physics potential.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
