光学
物理
基点
球差
镜头(地质)
涡流
旋涡
光学像差
光束
波前
梁(结构)
热力学
作者
Yu-Qin Wang,Kangle Yong,Dan Chen,Rongzhu Zhang
出处
期刊:Optics Express
[The Optical Society]
日期:2023-08-09
卷期号:31 (17): 28229-28229
被引量:2
摘要
For a tightly focusing imaging system, the aberration of the lens will result in a distorted focusing spot and undermine the system performance. In this paper, the expression of the tightly focused light field of Laguerre-Gaussian vector vortex beam (LGVVB) is deduced. Then the intensity distribution, focal shift and spot size that influenced by spherical aberration are calculated in detail. Since the vector vortex beams have multiple degrees of freedom to control the form of the intensity distribution on the focal plane, the effects of aberration on the focal spot are analyzed when some key parameters are changed. The results show the Pancharatnam topological charge is the most influential parameter to change the light distribution on the focal plane. According to the change rule, a scheme is proposed to minimize the effect of aberration by jointly adjusting the parameters of the LGVVB.
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