Phase analysis for partially coherent light propagating through an optimized aperture in a synchrotron beamline
Phase analysis for partially coherent light propagating through an optimized aperture in a synchrotron beamline
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通过同步加速器光束线中优化孔径传播的部分相干光的相位分析
DOI：
10.1107/s1600577520010565
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发表时间：
2020
影响因子：
2.5
通讯作者：
Tai Renzhong
中科院分区：
文献类型：
--
作者：
Ren Junchao;Meng Xiangyu;Wang Yong;Cao Jiefeng;Li Junqin;Tai Renzhong
计算了部分相干光在不同光阑尺寸和位置下通过光束线时的相互光强传输。从互光强度可以提取相干性、强度和相位分布。相位分布取决于孔径的大小和位置。结果表明，在最佳孔径尺寸和位置下，获得了最宽的平坦相位分布。孔径对部分相干光比非相干光起更重要的作用。分析了光阑孔径大小和位置对焦平面光强和光斑大小的影响。提出了一种在光束线上部分相干光的平坦相位分布面积、光斑大小和光强之间取得平衡的方法。
The mutual optical intensity propagation of partially coherent light through a beamline is calculated for different aperture sizes and positions. The coherence, intensity and phase distribution can be extracted from the mutual optical intensity. The phase distribution depends on the aperture size and position. The results show that the widest flat phase distribution is obtained at the optimized aperture size and position. The aperture plays a more important role for partially coherent light than for incoherent light. The influence of the aperture size and position on the intensity and spot size at the focal plane is also analyzed. A way to obtain a balance between the flat phase distribution area, spot size and intensity for partially coherent light in the beamline is demonstrated.