A 3D controllable diffraction-limited spot array generated by means of a spaced-dipole array

IF 2.3 4区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Iet Optoelectronics Pub Date : 2021-08-31 DOI:10.1049/ote2.12055

Yanzhong Yu, Han Huang, Shunda Lin, Yongxi Zeng, Musheng Chen, Qiwen Zhan

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引用次数: 2

Abstract

The creation of an array of three-dimensional (3D) multifocal spots in the focal region has attracted interest due to potential applications in parallel or simultaneous process areas. Based on the theory of pattern synthesis of antenna array and the electromagnetic time reversal technique, an optimisation-free approach is reported to construct a 3D controllable diffraction-limited spot array in the focal volume of a 4pi focussing system formed by two high-numerical-aperture (NA) objectives. The proposed method can be implemented readily by inversely focussing the field radiated from a virtual spaced-dipole antenna array mounted at the focus of the 4pi configuration. By solving the inverse problem, the required illumination in the pupil plane for producing the 3D spot array can be found. It is demonstrated that the 3D diffraction-limited focal spot array owns the properties of controllable polarisation, scheduled number, tunable location, and adjustable interval. This array may find applications in 3D simultaneous optical manipulation and trapping, 3D parallel fabrication, 3D optical data storage, and so on.

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一种利用空间偶极子阵列产生的三维可控限制衍射光斑阵列

由于在并行或同步工艺领域的潜在应用，在焦点区域中创建三维(3D)多焦点点阵列引起了人们的兴趣。基于天线阵方向图合成理论和电磁时间反转技术，提出了一种无需优化的方法，在由两个大数值孔径物镜组成的4pi聚焦系统的焦体中构建了三维可控的限衍射光斑阵列。所提出的方法可以很容易地通过在4pi结构的焦点处安装一个虚拟空间偶极子天线阵列的反向聚焦来实现。通过求解反问题，可以求出产生三维光斑阵列所需的瞳孔平面照度。结果表明，该阵列具有偏振可控、数量可调、位置可调、间隔可调等特点。该阵列可应用于三维同步光学操纵和捕获、三维并行制造、三维光学数据存储等领域。

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来源期刊

Iet Optoelectronics 工程技术-电信学

CiteScore

4.50

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： IET Optoelectronics publishes state of the art research papers in the field of optoelectronics and photonics. The topics that are covered by the journal include optical and optoelectronic materials, nanophotonics, metamaterials and photonic crystals, light sources (e.g. LEDs, lasers and devices for lighting), optical modulation and multiplexing, optical fibres, cables and connectors, optical amplifiers, photodetectors and optical receivers, photonic integrated circuits, photonic systems, optical signal processing and holography and displays. Most of the papers published describe original research from universities and industrial and government laboratories. However correspondence suggesting review papers and tutorials is welcomed, as are suggestions for special issues. IET Optoelectronics covers but is not limited to the following topics: Optical and optoelectronic materials Light sources, including LEDs, lasers and devices for lighting Optical modulation and multiplexing Optical fibres, cables and connectors Optical amplifiers Photodetectors and optical receivers Photonic integrated circuits Nanophotonics and photonic crystals Optical signal processing Holography Displays