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Multi-focus beams with adjustable three-dimensional morphing spatial structure

delete2025-05-08
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PRE
AI
F
Fajing Li
L
Lin Yu
L
Lemin Shan
W
Wu, Yurui
Y
Yiran Wang
Y
Yifan Wang
N
Nie, Shouping
J
Jun Ma
C
Caojin Yuan *
DOI:10.1016/j.optlastec.2025.112859delete
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摘要

摘要

En 中文
具有轴向多焦点特性的光束已被证明在当代光学中具有极高的价值。我们提出一种具有可调三维(3D)变形空间结构的新型多焦点三维变形(M3DM)光束。通过利用啁啾相位和扭转相位对环形艾里光束的相位谱进行调制,环形艾里光束被转换成具有四个焦点的M3DM光束。此外,两个中间焦点之间的连续三维封闭暗空间呈现出瓶状光束特性。通过调节调制相位的参数,三维封闭的瓶状空间乃至焦点本身均展现出不同的结构。从能量流分析来看,能量流梯度随光束结构的变化而变化。采用空间复用方法,生成一个M3DM光束阵列,能够在三维空间中产生四倍数量的焦点。此外,每个M3DM光束单元的尺寸和焦点位置可以独立调整,具有高度自由度。因此,所提出的光束凭借其独特的多焦点和自旋转特性,在三维取向的多粒子俘获、生物科学、光通信以及多平面成像等领域展现出广阔的应用前景。
Keyword:
Self-focusing
Circular Airy beam
Second-order chirp
Multi-focus beams
Beam shaping

期刊

O
Optics and Laser Technology
IF:
5
论文数:
2.5K
被引数:
3.5W

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