Tuning of near-field optical properties based on magneto-tip array super-surfaces

Cheng Chen; Zecheng Gao; Shenghua Duan; Guang Yang; Chunyu Zhang; Zhe Wang; Xinyu Zhang

doi:10.1117/12.2692777

7 March 2024 Tuning of near-field optical properties based on magneto-tip array super-surfaces

Cheng Chen, Zecheng Gao, Shenghua Duan, Guang Yang, Chunyu Zhang, Zhe Wang, Xinyu Zhang

Proceedings Volume 13084, MIPPR 2023: Multispectral Image Acquisition, Processing, and Analysis; 130840D (2024) https://doi.org/10.1117/12.2692777
Event: Twelfth International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2023), 2023, Wuhan, China

Abstract

A method of light wave modulation on a magnetic nano-tip hypersurface was investigated within the wavelength range of 3-14 μm, and a hypersurface was constructed on a silicon wafer using magnetic nano-film to perform light control using the magnetization of the magnetic nano-tip to achieve the desired light absorption. Through the magnetic nanotip hypersurface, the incident light waves hypersurface can be highly confined in the arrayed magnetic nanotip to achieve near-field light enhancement and light focusing, and significantly reduce the infrared reflectivity to achieve efficient absorption of infrared light waves. The infrared reflectivity of the structured surface shows a tunable variation by adjusting the structural parameters of the magnetic nano-tip super-surface. The experiments show that the silicon-based magnetic film nano-tip array achieves stronger nanofocusing and higher absorption rate than the conventional nano-tip array based on metal film.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Cheng Chen, Zecheng Gao, Shenghua Duan, Guang Yang, Chunyu Zhang, Zhe Wang, and Xinyu Zhang "Tuning of near-field optical properties based on magneto-tip array super-surfaces", Proc. SPIE 13084, MIPPR 2023: Multispectral Image Acquisition, Processing, and Analysis, 130840D (7 March 2024); https://doi.org/10.1117/12.2692777

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KEYWORDS

Magnetism

Infrared radiation

Light absorption

Metals

Absorption

Iron

Composites

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