Engineering the on-axis intensity of Bessel beam by a feedback tuning loop | |
Li, Runze1,2,3; Yu, Xianghua1; Yang, Yanlong1![]() ![]() | |
2018 | |
会议日期 | 2018-01-29 |
会议地点 | San Francisco, CA, United states |
卷号 | 10499 |
DOI | 10.1117/12.2290358 |
英文摘要 | The Bessel beam belongs to a typical class of non-diffractive optical fields that are characterized by their invariant focal profiles along the propagation direction. However, ideal Bessel beams only rigorously exist in theory; Bessel beams generated in the lab are quasi-Bessel beams with finite focal extensions and varying intensity profiles along the propagation axis. The ability to engineer the on-axis intensity profile to the desired shape is essential for many applications. Here we demonstrate an iterative optimization-based approach to engineering the on-axis intensity of Bessel beams. The genetic algorithm is used to demonstrate this approach. Starting with a traditional axicon phase mask, in the design process, the computed on-axis beam profile is fed into a feedback tuning loop of an iterative optimization process, which searches for an optimal radial phase distribution that can generate a generalized Bessel beam with the desired onaxis intensity profile. The experimental implementation involves a fine-tuning process that adjusts the originally targeted profile so that the optimization process can optimize the phase mask to yield an improved on-axis profile. Our proposed method has been demonstrated in engineering several zeroth-order Bessel beams with customized on-axis profiles. High accuracy and high energy throughput merit its use in many applications. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. |
产权排序 | 1 |
会议录 | Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXV
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会议录出版者 | SPIE |
语种 | 英语 |
ISSN号 | 16057422 |
ISBN号 | 9781510614833 |
内容类型 | 会议论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/30061] ![]() |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
通讯作者 | Yao, Baoli (yaobl@opt.ac.cn) |
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,Yang, Yanlong,et al. Engineering the on-axis intensity of Bessel beam by a feedback tuning loop[C]. 见:. San Francisco, CA, United states. 2018-01-29. |
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