4f光学系统制造理论高相似度无衍射光的参数研究

利用4f光学系统,可以产生多类型、高功率的无衍射光.然而,以前的研究主要集中在制造特定的无衍射光的光学应用中.首次综合分析了四类无衍射光在特定环宽的4f系统光强分布特性,利用傅里叶光学计算,首次分析四种类型无衍射光还原理论模型的优劣性,并发现所有的无衍射光的光强分布相似度会随着角谱采样的上升而下降的规律,用对应光学实验...

Parameter analysis on generating high similarity non-diffracting beam of 4f optical system

Combined with a 4 f optical system,this setup can generate arbitrary non-diffracting beams with high power efficiency.Previously,researchers have mainly focused on the generation of a specific type of beam.For the first time,we analyze the light intensity distribution characteristics of four kinds of non-diffractive light in the 4 f system with specific ring width.Using Fourier optical calculations,four families of generated non-diffracting beams were evaluated on their intensity distribution.It is also found that the similarity of intensity distribution is decreased with the increased sampling number in angle spectrum,and then verified using experimental results.The conclusions can improve the quality of various non-diffracting beams in general applications,and the analysis method can be also implemented in other similar optical systems.