摘要
根据部分相干光的传输理论,介绍了部分相干涡旋在光源平面上光强的分布情况,并以环形涡旋光束为例,做了详细的分析,得出相对宽度s/w0和拓扑荷数m的变化,对z=0截面上的光强I分布的影响。还给出了两束平行、离轴的部分相干环形涡旋光束叠加合成的相干涡旋,分析了在叠加场中光强I随离轴相对距离d/w0和相干参数α变化的情况,并且在相干极限α→∞时,复合相干光涡旋就转化成复合光涡旋。
We present the partially coherent nature of the annulus vortex beams based on the transmission theory of partially coherent light. We also make a detailed analysis for the annulus vortex beam. We further discover the impact of the change of the relative width s/wo and the topological charge intensity distribution number m on light intensity distribution in z = 0 section. We give the overlapped coherent vortex of two parallel and off-axis partially coherent beams. We eventually analyze the change of light intensity in a overlapped field with the relative distance from axis d/wo and the coherent parameter α. Moreover, composite coherent light vortex will change into composite light vortex when the paremeter cx approaches infinity.
出处
《山东科学》
CAS
2012年第3期50-53,共4页
Shandong Science
基金
山东省教育厅科技研究计划资助项目(J08LI11)
关键词
奇点光学
环形涡旋
复合相干涡旋
singularity optics
annulus vortex
composite coherent vortex
