Surface plasma holographic grating generation device and method and ultra-strong vortex laser generation method

The invention provides a surface plasma holographic grating generation device and method and a superstrong vortex laser generation method, and the method comprises the steps: enabling a beam of vortex laser and a beam of Gaussian laser to irradiate the surface of a plasma target at the same time, and carrying out the interference, thereby forming a surface plasma holographic grating. Further, the reading light irradiates the surface plasma holographic grating, when the reading light is diffracted by the surface plasma holographic grating, the reading light copies the phase of the vortex laser and is converted into ultra-strong vortex laser, and the reading light is ultra-high-intensity Gaussian laser. The invention provides a feasible way for generating the ultra-strong tight focusing vortex laser. 本发明提出一种表面等离子体全息光栅产生装置、方法及超强涡旋激光产生方法，包括利用一束涡旋激光和一束高斯激光同时照射到等离子体靶的表面并且干涉，形成表面等离子体全息光栅。进一步地，读取光照射表面等离子体全息光栅，当读取光被表面等离子体全息光栅衍射时，读取光也复制了涡旋激光的相位，并且转化为超强涡旋激光，其中读取光为超高强度高斯激光。本发明为产生超强紧聚焦涡旋激光提供了一种可行的途径。