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18 December 2019 Generation of a hollow-tube array with prescribed characteristics
Lei Jia, Yanzhong Yu, Yuting Zeng
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Proceedings Volume 11336, AOPC 2019: Nanophotonics; 1133609 (2019) https://doi.org/10.1117/12.2543316
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China
Abstract
Based on the principle of antenna pattern multiplication as the product of the element pattern and array factor, a simple and flexible method to generate hollow-tube arrays with predetermined properties is proposed. This approach can be easily realized in a 4Pi focusing system by reversing the field eradiated from the collinear antenna array whose elements are isotropic magnetic current sources. All hollow tubes produced by this method are pure azimuthally polarized fields whose intensity distribution is nearly unchanged along the entire depth of focus. Numerical results show that the appearance and position of the focusing field only depend on the element pattern and array factor, respectively. These peculiar focusing field arrays are suitable for multi-particle trapping and manipulation, materials processing, and optical lithography.
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Lei Jia, Yanzhong Yu, and Yuting Zeng "Generation of a hollow-tube array with prescribed characteristics", Proc. SPIE 11336, AOPC 2019: Nanophotonics, 1133609 (18 December 2019); https://doi.org/10.1117/12.2543316
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KEYWORDS
Antennas
Objectives
Lens design
Apodization
Modulation
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