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Proceedings Paper • new

EMC design of high power TEA CO2 laser
Author(s): Deyang Yu; Chunlei Shao; Fanjiang Meng; Lihong Guo; Fei Chen; Jin Guo
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Paper Abstract

High power TEA CO2 laser belongs to the gas laser with high-voltage (HV) pulse excitation. The strong electromagnetic interference (EMI) are generated mainly from the discharge circuit loop, the pulse spark switch and the HV supply when the laser works. It has a strong interference and destructive effect on the electronic equipments inside and outside the laser system. The mechanism analysis and experimental measurement were carried out in this paper. The shielding design on the HV supply, the main discharge circuit loop and the main control unit restrained the transmission of EMI effectively. The mains filters were designed to restrain the conducing EMI propagation path. As a sensitive device to EMI, the control system was shielded, isolated and mains filtered on hardware, anti-interference on software was designed to improve the ability of noise reduction. Experimental results demonstrated that reducing EMI intensity, shielding EMI, improving the hardware ability on noise suppression are the primary methods to retrain EMI and keep the hardware of laser control system from being destroyed, the anti-interference on software is a support and complement of hardware noise suppression, which improves the reliability of the laser system.

Paper Details

Date Published: 29 March 2019
PDF: 7 pages
Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110460T (29 March 2019); doi: 10.1117/12.2523925
Show Author Affiliations
Deyang Yu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Univ. of Chinese Academy of Sciences (China)
Chunlei Shao, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Fanjiang Meng, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Lihong Guo, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Fei Chen, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Jin Guo, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 11046:
Fifth International Symposium on Laser Interaction with Matter
YiJun Zhao, Editor(s)

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