基于罗曼型迂回相位编码法产生三参数Lommel光束  

Production of Three-Parameter Lommel Beams Using Lohmann-Type Detour Phase-Coding Method

作　　者：杨婧羽 施逸乐[1] 周润[1,2] 刘子陌 弓宁 陈日坚 任志君 Yang Jingyu;Shi Yile;Zhou Run;Liu Zimo;Gong Ning;Chen Rijian;Ren Zhijun(Key Laboratory of Optical Information Detecting and Display Technology,College of Physics and Electronic Information Engineering,Zhejiang Normal University,Jinhua 321004,Zhejiang,China;Yiwu Industrial and Commercial College,Jinhua 322000,Zhejiang,China)

机构地区：[1]浙江师范大学物理与电子信息工程学院浙江省光信息检测与显示技术研究重点实验室,浙江金华321004 [2]义乌工商职业技术学院,浙江金华322000

出　　处：《激光与光电子学进展》2023年第19期105-110,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11974314)。

摘　　要：Lommel光束是由Lommel函数描述的一种结构复杂的无衍射光束,其光学形态可由阶数n、不对称度c0、旋转角度?0等3个参数调控,三参数Lommel光束结构复杂,实验上较难产生。引入了一种复振幅调制技术来产生Lommel光束,利用罗曼型迂回相位编码法,对复杂波前的振幅和相位进行编码,构造出能够产生Lommel光束的二元计算全息图,然后使用全息直写打印系统,将由计算机构建的二元计算全息图加工成实振幅掩模板,实验制备了像素数高达35000 pixel×35000 pixel的掩模板,最终方便地产生了高质量的Lommel光束,该研究方法也为产生其他具有复杂结构的无衍射光束提供了思路。Lommel beams are a type of complex-structure nondiffractive beams expressed by the Lommel function.Their optical features can be adjusted using three parameters:order n,asymmetry c0,and rotation angle ?0.However,the optical structure of a Lommel beam is complex,making it challenging to be produced experimentally.In this study,we introduce a complex amplitude modulation technique to generate nondiffractive Lommel beams.The amplitude and phase of complex wavefronts are simultaneously encoded using the Lohmann-type detour phase-coding method.High-quality Lommel beams are produced by processing the computer-generated hologram into a real amplitude mask using the holographic direct-writing printing system.In the experiments,the mask plate reaches 35000 pixel×35000 pixel.Furthermore,this study provides a general approach for producing nondiffractive beams with other different complex structures.

关 键 词：无衍射光束 计算全息 罗曼型迂回相位编码法 全息直写打印系统 

分 类 号：O436[机械工程—光学工程]