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Shaping the on-axis intensity profile of generalized Bessel beams by iterative optimization methods
Li, Runze1,2,3; Yu, Xianghua1; Peng, Tong1,2,3; Yang, Yanlong1; Yao, Baoli1; Zhang, Chunmin2; Ye, Tong4
作者部门瞬态光学技术国家重点实验室
2018-07-06
发表期刊Journal of Optics (United Kingdom)
ISSN20408978
卷号20期号:8
产权排序1
摘要

The Bessel beam belongs to a typical class of non-diffractive optical fields that are characterized by their invariant transverse profiles with the beam propagation. The extended and uniformed intensity profile in the axial direction is of great interest in many applications. However, ideal Bessel beams only rigorously exist in theory; the Bessel beams generated in the experiment are always quasi-Bessel beams with finite focal extensions and varying intensity profiles along the propagation axis. The ability to shape the on-axis intensity profile to meet specific needs is essential for many applications. Here, we demonstrate an iterative optimization based approach to engineer the on-axis intensity of Bessel beams through design and fine-tune processes. Starting with a standard axicon phase mask, the design process uses the computed on-axis beam profile as a feedback in the iterative optimization process, which searches for the optimal radial phase distribution that can generate a so-called generalized Bessel beam with the desired on-axis intensity profile. The fine-tune process repeats the optimization processing by using the adjusted target on-axis profile according to the measured one. Our proposed method has been demonstrated in engineering several quasi-Bessel beams with customized on-axis profiles. The high accuracy and high energy throughput merit its use in many applications. This method is also suitable to engineer higher-order Bessel beams by adding appropriate vortex phases into the designed phase mask. © 2018 IOP Publishing Ltd.

DOI10.1088/2040-8986/aace46
收录类别EI
语种英语
出版者Institute of Physics Publishing
EI入藏号20183305703035
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/30563
专题瞬态光学技术国家重点实验室
通讯作者Ye, Tong
作者单位1.State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an; 710119, China;
2.School of Science, Xi'An Jiaotong University, Xi'an; 710049, China;
3.University of Chinese Academy of Sciences, Beijing; 100049, China;
4.Department of Bioengineering, Clemson University, Clemson-MUSC Bioengineering Program, Charleston; SC; 29425, United States
推荐引用方式
GB/T 7714
Li, Runze,Yu, Xianghua,Peng, Tong,et al. Shaping the on-axis intensity profile of generalized Bessel beams by iterative optimization methods[J]. Journal of Optics (United Kingdom),2018,20(8).
APA Li, Runze.,Yu, Xianghua.,Peng, Tong.,Yang, Yanlong.,Yao, Baoli.,...&Ye, Tong.(2018).Shaping the on-axis intensity profile of generalized Bessel beams by iterative optimization methods.Journal of Optics (United Kingdom),20(8).
MLA Li, Runze,et al."Shaping the on-axis intensity profile of generalized Bessel beams by iterative optimization methods".Journal of Optics (United Kingdom) 20.8(2018).
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