Research of beam combination and focusing system of laser diode applied in ceramic welding

WANG Fei; TANG Xiahui; ZHONG Lijing; XU Chengwen; HU Qian; YAO Wei

doi:10.7510/jgjs.issn.1001-3806.2018.02.027

LASER TECHNOLOGY > 2018 > 42(2): 282-288. > DOI: 10.7510/jgjs.issn.1001-3806.2018.02.027

WANG Fei, TANG Xiahui, ZHONG Lijing, XU Chengwen, HU Qian, YAO Wei. Research of beam combination and focusing system of laser diode applied in ceramic welding[J]. LASER TECHNOLOGY, 2018, 42(2): 282-288. DOI: 10.7510/jgjs.issn.1001-3806.2018.02.027

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Research of beam combination and focusing system of laser diode applied in ceramic welding

1.
School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
2.
Shenzhen Research Institute of Huazhong University of Science and Technology, Shenzhen 518057, China

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Received Date: April 22, 2017
Revised Date: June 19, 2017
Published Date: March 24, 2018

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Abstract

Abstract

In order to solve the connection problem of Al₂O₃ ceramic lined pipe in petroleum pipeline, a special semiconductor laser light source was developed for ceramic laser welding. The technological parameters and beam requirements for ceramic laser welding were investigated experimentally. By means of single tube space beam combination, polarization beam combination, wavelength combination and Fresnel focusing system, a semiconductor laser ceramic welding system with uniform light distribution field was developed. The results show that, the output power of the polarization combination module is 384W, the beam combination efficiency is up to 96.62%. After wavelength combination, the output power can exceed 800W, and the output spot uniformity of focusing system is 93.85%. The system can be applied to ceramic welding in different occasions, and meet the requirements of Al₂O₃ ceramic laser welding with 2mm thickness.
- laser technique,
- ceramic laser welding,
- laser diode,
- incoherent combination,
- Fresnel focusing lens

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