光学
衍射
色散(光学)
衍射光栅
栅栏
斜格
衍射效率
雷
材料科学
物理
哲学
语言学
作者
Kai Zhang,Guimei Wei,W. T. Lu,Xiongping Xia
出处
期刊:Applied Optics
[The Optical Society]
日期:2024-05-30
卷期号:63 (18): 4952-4952
摘要
Based on the vector diffraction theory, the angular dispersion and diffraction imaging are analyzed in parallel light oblique incident two-dimensional crossed gratings. The results show that the angular dispersion presents a kind of increase-decrease-increase oscillatory change, and the maximum value of diffractive polar angle dispersion and total dispersion present an abrupt point. The angular dispersion is limited by the light wave incidence angle and two-dimensional gratings crossed angle. In addition, some obvious pincushion distortion has been formed in some cases. The angular dispersion increases with the increase of grating crossed angle in the permissible range, leading to enhancement of the diffraction imaging distortion. The results imply that there is an inherent relationship between the angular dispersion and the diffraction imaging in parallel light oblique incident crossed gratings.
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