NSGA-II优化的自由曲面光学光束整形准直技术

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-09-13 DOI:10.1016/j.optcom.2025.132411

Jianing Liu, Ping Jiang, Huajun Yang, Dongyin Wang

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引用次数: 0

摘要

本研究提出了一种解决激光二极管发射固有不对称性的技术。我们提出了一个自由曲面系统，将二极管的椭圆高斯输出转换为在指定工作距离下的平顶强度分布。使用三维逐点迭代法确定自由曲面的轮廓。系统的光束均匀性和准直很大程度上取决于迭代的起始位置。为了优化该参数，我们采用非支配排序遗传算法II来确定最优配置。我们用三个圆形和矩形平顶梁的设计实例证明了这种方法的可行性。在所有情况下，目标平面上的RMS非均匀性在距离达1000mm时几乎保持在0.2以下。由此产生的光束整形系统不仅灵活紧凑，而且具有消色差和多波长功能，使其适合要求精确光控制的应用。

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A beam shaping and collimation technique using freeform optics optimized by NSGA-II

This study presents a technique to address the inherent asymmetry of laser diode emission. We propose a freeform surface system to convert the diode’s elliptical Gaussian output into a flat-top intensity profile at a specified working distance. The profiles of the freeform surfaces are determined using a three-dimensional, point-by-point iterative method. Beam uniformity and collimation of the system depend strongly on the iteration’s starting position. To optimize this parameter, we employ a Non-dominated Sorting Genetic Algorithm II to determine the optimal configurations. We demonstrate the feasibility of this approach with three design examples of circular and rectangular flat top beams. In all cases, the RMS non-uniformity on the target plane almost remains below 0.2 at distance up to 1000 mm. The resulting beam shaping system is not only flexible and compact but also features achromatic and multi-wavelength capabilities, making it suitable for applications demanding precise light control.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.