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Automatic online laser resonator alignment based on machine vision: Analysis
Dong, Lizhi1; Liu, Wenjin1; Yang, Ping1; Wang, Shuai1,2; He, Xing1,2; Xu, Bing1
Volume9530
Pages95300L
2015
Language英语
ISSN0277-786X
DOI10.1117/12.2184585
Indexed BySCI ; Ei
Subtype会议论文
AbstractIn order to maintain sufficient performance of a laser, proper alignment of the resonator is very important. We present online laser resonator alignment based on machine vision. In this method, a camera detects the displacement of the laser beam spot on the rear mirror from a reference location, and the displacement of this spot is used to indicate the misalignment of the cavity mirrors. The resonator could be automatically aligned using the displacement as feedback. We give a detailed analysis of the relation between tilt of resonator mirrors and the beam spot location on the rear mirror by calculating the modes of the resonator. Both a stable symmetric confocal resonator and a positive branch confocal unstable resonator are investigated. Calculation results show that the displacement of the beam spot on the rear mirror continuously grows with tilt of the resonator mirrors, and the direction of the displacement can well reflect the direction of the misalignment, indicating that the displacement can effectively denote resonator misalignment. © 2015 SPIE.; In order to maintain sufficient performance of a laser, proper alignment of the resonator is very important. We present online laser resonator alignment based on machine vision. In this method, a camera detects the displacement of the laser beam spot on the rear mirror from a reference location, and the displacement of this spot is used to indicate the misalignment of the cavity mirrors. The resonator could be automatically aligned using the displacement as feedback. We give a detailed analysis of the relation between tilt of resonator mirrors and the beam spot location on the rear mirror by calculating the modes of the resonator. Both a stable symmetric confocal resonator and a positive branch confocal unstable resonator are investigated. Calculation results show that the displacement of the beam spot on the rear mirror continuously grows with tilt of the resonator mirrors, and the direction of the displacement can well reflect the direction of the misalignment, indicating that the displacement can effectively denote resonator misalignment. © 2015 SPIE.
Conference NameProceedings of SPIE - The International Society for Optical Engineering
Conference Date2015
Citation statistics
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7833
Collection自适应光学技术研究室(八室)
Affiliation1. Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, PO Box 350, Chengdu, China
2. University of Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Dong, Lizhi,Liu, Wenjin,Yang, Ping,et al. Automatic online laser resonator alignment based on machine vision: Analysis[C],2015:95300L.
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