Creation of a 3D double-helix focal field with controllable characteristics

Zhixiong Xie; Yanzhong Yu; Qiao Wang; Chengyu Xiao

doi:10.1117/12.3011088

1 November 2023 Creation of a 3D double-helix focal field with controllable characteristics

Zhixiong Xie, Yanzhong Yu, Qiao Wang, Chengyu Xiao

Proceedings Volume 12917, International Conference on Precision Instruments and Optical Engineering (PIOE 2023); 129170C (2023) https://doi.org/10.1117/12.3011088
Event: 3rd International Conference on Precision Instruments and Optical Engineering (PIOE 2023), 2023, Shanghai, China

Abstract

Spatially controllable focal fields play a pivotal role in modern optical engineering, offering opportunities for precise manipulation of light-matter interactions in various applications. Double-helix focal fields, in particular, have gained attention due to their unique helix structure that exhibit distinct optical properties. In this paper, we propose a method for generating a controllable spatial double-helix focal field without optimization. This is accomplished by utilizing the radiation pattern of a virtual helix antenna consisting of magnetic units, which is reverse-focused in a 4π-system. Numerical results indicate that the double-helix focal field can be flexibly customized by selecting the shape and parameters of the helix antenna. The novel and customizable double-helix focal field expands the applications of optical engineering in complex opto-fluidics and optical lithography.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhixiong Xie, Yanzhong Yu, Qiao Wang, and Chengyu Xiao "Creation of a 3D double-helix focal field with controllable characteristics", Proc. SPIE 12917, International Conference on Precision Instruments and Optical Engineering (PIOE 2023), 129170C (1 November 2023); https://doi.org/10.1117/12.3011088

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KEYWORDS

Antennas

Magnetism

3D projection

Polarization

3D image processing

Optical engineering

Optical imaging

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