Gaussian beam reshaping into flat-top rectangular beam based on two pairs of cylindrical microlens arrays

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-04-06 DOI:10.1016/j.optlastec.2025.112915

Ya-jie Zheng , Qi Bian , Feng Yang , Chen Wang , Fei Yang , Huan Wang , Yong Bo

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引用次数: 0

Abstract

We propose and demonstrate a new reshaping beam homogenization scheme based on two pairs of cylindrical microlens arrays, which enable the reshaping of a Gaussian circular beam into a uniform flat-top rectangular beam with adjustable size and aspect ratio. Based on the Fourier optics theory, the beam propagation process was analyzed, leading to the establishment of a homogenized light field model. The design parameters of the microlens array system were optimized by using Zemax software. In a proof-of-principle experiment, variant homogenized rectangular spots with customizable aspect ratios can be successfully created, by adjusting the interval between the cylindrical microlens arrays, while the corresponding uniformity remains largely unchanged. This work provides a novel method for generating rectangular intensity distribution with adjustable dimensions. Its spatial flexibility and adaptability are well-suited to the requirements of scientific research and industrial applications.

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基于两对圆柱微透镜阵列的高斯光束平顶矩形光束整形

我们提出并演示了一种基于两对圆柱形微透镜阵列的光束整形均匀化方案，该方案能够将高斯圆形光束整形为尺寸和宽高比可调的均匀平顶矩形光束。基于傅里叶光学理论，分析了光束的传播过程，建立了均匀化光场模型。利用Zemax软件对微透镜阵列系统的设计参数进行优化。在一个原理验证实验中，通过调整圆柱微透镜阵列之间的间隔，可以成功地创建具有定制宽高比的可变均匀矩形光斑，而相应的均匀性基本保持不变。该工作为生成尺寸可调的矩形强度分布提供了一种新的方法。其空间灵活性和适应性非常适合科研和工业应用的要求。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems