Thabit F M, AlKelly A A, Shukri M A
J Opt Soc Am A Opt Image Sci Vis. 2020 May 1;37(5):759-767. doi: 10.1364/JOSAA.386820.
Theoretically, we have investigated the propagation of fully and partially coherent flat-topped multi-Gaussian beams through classical and logarithmic axicons. The stationary phase method applied to the Fresnel diffraction integral for intensity distribution has led to applicable relationships. The influences of axicon base angle, beam width, beam flatness, and coherence length with intensity distribution were studied. A number of results have been analyzed and discussed revealing some important conclusions. During this investigation, a specific interest has been given toward producing uniform intensity and long focal depth.
从理论上讲，我们研究了完全相干和部分相干平顶多高斯光束通过经典轴锥镜和对数轴锥镜的传播特性。将驻相法应用于菲涅耳衍射积分以求解光强分布，得到了适用的关系式。研究了轴锥镜顶角、光束宽度、光束平顶度和相干长度对光强分布的影响。分析和讨论了一系列结果，得出了一些重要结论。在这项研究中，我们特别关注产生均匀光强和长焦深。
