Optical Instruments, Volume. 47, Issue 3, 1(2025)

Design and research on optical drive rotating structure of anti-magnetic levitation pyrolytic graphite

Mingxin YU, Mingrui CAO, and Jianlang LI*
Author Affiliations
  • School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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    The optical drive movement of anti-magnetic levitation pyrolytic graphite is of great significance to the optical manipulation of objects and the acquisition of optical energy. At present, the existing rotating system of optical drive based on pyrolytic graphite has the problems of low rotating speed and low energy conversion efficiency. Therefore, it is proposed to adjust the magnetic field around the magnetic levitation pyrolytic graphite to directionally enhance its rotation. Specifically, a magnetic levitation base structure with circular magnetic field defects was designed to improve the rotation speed of pyrolytic graphite under irradiation. Firstly, based on the magnetic field theory and heat conduction theory, a numerical analysis model was established, and the realization mechanism and motion law of the magnetic levitation pyrolytic graphite optical drive were explained. Then the optical driving effect of the designed magnetic levitation structure was verified by experiments. The results showed that the maximum rotation speed of pyrolytic graphite was 3.5 r/s driven by semiconductor laser with wavelength of 808 nm and power of 200 mW. Compared with the original structure, in the power range of 20 to 200 mW, driven by the laser with the same optical power, the rotating speed of the pyrolytic graphite was increased by 1 to 2 times. It had better stability and lower rotation threshold power. The research results provide reference for the design of optical drive rotating devices and new optical energy collection systems.

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    Mingxin YU, Mingrui CAO, Jianlang LI. Design and research on optical drive rotating structure of anti-magnetic levitation pyrolytic graphite[J]. Optical Instruments, 2025, 47(3): 1

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    Paper Information

    Received: Mar. 15, 2024

    Accepted: --

    Published Online: Jul. 28, 2025

    The Author Email: Jianlang LI (lijianlang@usst.edu.cn)

    DOI:10.3969/j.issn.1005-5630.202403150051

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