Focusing of high-order vortex laser beams by binary axicon with different numerical aperture

作     者：D A Savelyev S A Fomchenkov 

作者机构：Department of Engineering Cybernetics Samara National Research University Samara 443086 Russia Laboratory of Laser Measurements Image Processing Systems Institute - Branch of the Federal Scientific Research Centre 'Crystallography and Photonics' of Russian Academy of Sciences Samara 443001 Russia 

出 版 物：《Journal of Physics: Conference Series》 

年 卷 期：2018年第1124卷第5期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：The spatial distribution of the focused high-order vortex Gauss-Laguerre beams is investigated subject to the change of the numerical aperture of the diffraction axicon and order of the vortex phase in the 3D model. Modeling of diffraction is numerically investigated by the finite difference time domain (FDTD) method using high-performance computing.