Generation of shaping nondiffracting structured caustic beams on the basis of stationary phase principle  

作　　者：陈日坚 施逸乐 弓宁 刘叶枫 任志君 Rijian Chen;Yile Shi;Ning Gong;Yefeng Liu;Zhijun Ren(Key Laboratory of Optical Information Detecting and Display Technology,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]Key Laboratory of Optical Information Detecting and Display Technology,Zhejiang Normal University,Jinhua 321004,China

出　　处：《Chinese Optics Letters》2023年第10期99-105,共7页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.11974314).

摘　　要：On the basis of the stationary phase principle,we construct a family of shaping nondiffracting structured caustic beams with the desired morphology.First,the analytical formula of a nondiffracting astroid caustic is derived theoretically using the stationary phase method.Then,several types of typical desired caustics with different shapes are numerically simulated using the obtained formulas.Hence,the key optical structure and propagation characteristics of nondiffracting caustic beams are investigated.Finally,a designed phase plate and an axicon are used to generate the target light field.The experimental results confirm the theoretical prediction.Compared with the classical method,the introduced method for generating nondiffracting caustic beams is high in light-energy utilization;hence,it is expected to be applied conveniently to scientific experiments.

关 键 词：nondiffracting structured caustic beams phase plate stationary phase method AXICON 

分 类 号：O436[机械工程—光学工程]