Formation of Cascaded Longitudinal Electric Field and Convergence of Radially Polarized Light Based on Conical Mirror and Cylindrical Reflection Mirror
The radially polarized light can be tightly focused and then forms a strong longitudinal electric field.The longitudinal electric field which follows the form of zero order Bessel function in cross section is calculated based on the Kirchhoff diffraction theory when radially polarized light is reflected and focused by a conical mirror.The relationships among spot size of incident light,cone-apex angle,radius of the exit end of conical mirror and coherent length and lateral width of the optical field of conv...
3日本电气通信大学激光研究所,东京182-85850801005-1discussed.Results show that a cascaded longitudinal electric field with periodic length of 1154λand duty circle of 1is formed when the conical mirror has an cone-apex angle of 60°and the radius of the exi