Open AccessPhase analysis for partially coherent light propagating through an optimized aperture in a synchrotron beamline
Author(s) -
Ren Junchao,
Meng Xiangyu,
Wang Yong,
Cao Jiefeng,
Li Junqin,
Tai Renzhong
Publication year - 2020
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577520010565
Subject(s) - optics , beamline , aperture (computer memory) , coherence (philosophical gambling strategy) , physics , intensity (physics) , phase (matter) , synchrotron , diffraction , position (finance) , angular aperture , coherent diffraction imaging , beam (structure) , phase retrieval , focal length , fourier transform , finance , quantum mechanics , acoustics , economics , lens (geology)
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.