Ultraviolet optical spanner with focused vortex metalens

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-01-18 DOI:10.1016/j.optcom.2025.131535

Yuqing Zhang , Haitang Li , Jin Deng , Yongcan Zeng , Zihan Shen , Lehan Zhao , Mingjie Wu , Xiaoyun He , Chengzhi Huang , Jiagui Wu , Junbo Yang

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引用次数: 0

Abstract

The miniaturized integrated ultraviolet (UV) optical spanner (OS) plays a crucial role in attaining both high resolution and precise control. In this study, we propose an UV OS scheme with focused vortex metalens. Employing this approach, we have designed a UV metalens with a numerical aperture (NA) of 1.1. Optical forces acting on particles within the focused spiral ring and the trapping potential were computed using the finite-difference time-domain (FDTD) method. Our designed metalens effectively trapped SiO₂ particles with a 60 nm radius within the optical vortex (OV) ring. The maximum optical forces acting on the SiO₂ particles were 3.45 pN W⁻¹, 3.45 pN W⁻¹, and 1.1 pN W⁻¹ in the x, y, and z-directions, respectively. Furthermore, we examined the correlation between the optical forces exerted by the OS and particle diameter, particle refractive index, as well as incident power. We also discussed the correlations between azimuthal force, rotational velocity, and torque with changes in topological charge. These findings present innovative technical solutions for the precise manipulation of viral particles and nanoparticles.

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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.