Holographic multi-focus multifunctional metalens realises particle capture, rotation and sorting

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-03-15 DOI:10.1016/j.optcom.2025.131718

Yuehua Deng , Xiaoyan Huang , Shengru Zhou , Shaoqi Li , Yijiao Zhu , Yang Yu , Junbo Yang

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引用次数: 0

Abstract

Optical tweezers, with their excellent manipulation precision, have become a vital tool for exploring the microscopic world and have significantly advanced research in physical and biological sciences. However, enhancing system integration and multifunctionality remains a critical challenge. In this study, we adopt a shared aperture approach to design and construct a polarisation-insensitive multifunctional optical tweezer system with a high numerical aperture. This system can capture, rotate, and sort various nanospheres in parallel. Through theoretical analyses and numerical simulations, we propose an innovative method to coaxially focus a Gaussian spot with a vortex spot, generating a unique light field for conducting photodynamic analyses of particles. Furthermore, our method enables the generation of numerous arbitrary-state light fields in free space with uniformly normalised electric field strengths. These foci ensure uniform light field distribution and consistent particle capture, enhancing the precision of optical tweezers in biophysics, materials science, and nanotechnology. This work also provides novel theoretical insights for microscale precision manipulation and analysis.

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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.