Magnetically driven micro-optical choppers fabricated by two-photon polymerization

Xiaonan Lei; Xiaonan Lei; Sida Peng; Yahua Niu; Shengzhi Sun; Yi Zhu; Yi Zhu; Jianrong Qiu; Jianrong Qiu

doi:10.1364/OL.481982

Optics Letters
Vol. 48,
Issue 3,
pp. 835-838
(2023)
•https://doi.org/10.1364/OL.481982

Magnetically driven micro-optical choppers fabricated by two-photon polymerization

Xiaonan Lei, Sida Peng, Yahua Niu, Shengzhi Sun, Yi Zhu, and Jianrong Qiu

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Xiaonan Lei, Sida Peng, Yahua Niu, Shengzhi Sun, Yi Zhu, and Jianrong Qiu, "Magnetically driven micro-optical choppers fabricated by two-photon polymerization," Opt. Lett. 48, 835-838 (2023)

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Abstract

In this Letter, a series of magnetically driven micro-optical choppers based on customized photoresist were fabricated by two-photon polymerization (TPP) technology. Synthetic Fe₃O₄ nanoparticles (NPs) were modified and dispersed in the original photoresist to achieve magnetic field response. After accurately formulating a magnetic photoresist containing Rhodamine B to reduce the light transmittance, four micro-optical choppers with different slot widths were printed using optimized processing parameters. The micro-optical choppers were remotely manipulated to rotate by the external magnetic field. More importantly, the function demonstration of the micro-optical choppers with an excellent chopping effect was achieved at a given light wavelength of 515 nm. The magnetically driven micro-optical choppers provide a new approach, to the best of our knowledge, for the fabrication of external field-responsive optical components.

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Supplementary Material (4)

Name	Description
Supplement 1	Additional Note
Visualization 1	Micropointer angle control demo
Visualization 2	Microchopper rotation demonstration
Visualization 3	Chopping demonstration

Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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