Characterization of beam quality of unstable laser beams with the multiple hyperbolas method
In this paper, the multiple hyperbolas method is proposed for characterizing the beam quality of unstable laser beams. Based on the traditional beam quality analyzer equipment, the proposed method captures multiple intensity images at every measurement positions. Afterward, three different hyperbola...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-03-01
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| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379718321156 |
| _version_ | 1818887045345443840 |
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| author | Lingqiang Meng Qingqing Kong Kunhao Ji Zhigang Han Hua Shen Rihong Zhu |
| author_facet | Lingqiang Meng Qingqing Kong Kunhao Ji Zhigang Han Hua Shen Rihong Zhu |
| author_sort | Lingqiang Meng |
| collection | DOAJ |
| description | In this paper, the multiple hyperbolas method is proposed for characterizing the beam quality of unstable laser beams. Based on the traditional beam quality analyzer equipment, the proposed method captures multiple intensity images at every measurement positions. Afterward, three different hyperbolas are fitted according to the widths of laser intensities. With the fitted hyperbolas, three parameters, which include the average beam quality factor (Maver2) and variation factors (νpos, νneg), are determined. With the proposed method and determined parameters, the beam quality of unstable laser beams can be characterized more accurately and completely. The limitation of the traditional ISO standard-based method for characterizing unstable laser beams is also presented. In addition, the simulation and experimental results agree well with each other, indicating that the new method and determined parameters are appropriate for characterizing unstable laser beams. Keywords: Laser beam delivery and diagnostics, Laser characteristic, Laser beam quality, Unstable laser beams |
| first_indexed | 2024-12-19T16:30:59Z |
| format | Article |
| id | doaj.art-a68a82f26bce4addb84fb1fdb7d93950 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-19T16:30:59Z |
| publishDate | 2019-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-a68a82f26bce4addb84fb1fdb7d939502022-12-21T20:14:11ZengElsevierResults in Physics2211-37972019-03-01123845Characterization of beam quality of unstable laser beams with the multiple hyperbolas methodLingqiang Meng0Qingqing Kong1Kunhao Ji2Zhigang Han3Hua Shen4Rihong Zhu5School of Electronic and Optical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, ChinaMIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, ChinaMIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, ChinaMIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, China; Corresponding authors at: MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, China (R. Zhu).School of Electronic and Optical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, China; Corresponding authors at: MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science & Technology, Nanjing 210094, China (R. Zhu).In this paper, the multiple hyperbolas method is proposed for characterizing the beam quality of unstable laser beams. Based on the traditional beam quality analyzer equipment, the proposed method captures multiple intensity images at every measurement positions. Afterward, three different hyperbolas are fitted according to the widths of laser intensities. With the fitted hyperbolas, three parameters, which include the average beam quality factor (Maver2) and variation factors (νpos, νneg), are determined. With the proposed method and determined parameters, the beam quality of unstable laser beams can be characterized more accurately and completely. The limitation of the traditional ISO standard-based method for characterizing unstable laser beams is also presented. In addition, the simulation and experimental results agree well with each other, indicating that the new method and determined parameters are appropriate for characterizing unstable laser beams. Keywords: Laser beam delivery and diagnostics, Laser characteristic, Laser beam quality, Unstable laser beamshttp://www.sciencedirect.com/science/article/pii/S2211379718321156 |
| spellingShingle | Lingqiang Meng Qingqing Kong Kunhao Ji Zhigang Han Hua Shen Rihong Zhu Characterization of beam quality of unstable laser beams with the multiple hyperbolas method Results in Physics |
| title | Characterization of beam quality of unstable laser beams with the multiple hyperbolas method |
| title_full | Characterization of beam quality of unstable laser beams with the multiple hyperbolas method |
| title_fullStr | Characterization of beam quality of unstable laser beams with the multiple hyperbolas method |
| title_full_unstemmed | Characterization of beam quality of unstable laser beams with the multiple hyperbolas method |
| title_short | Characterization of beam quality of unstable laser beams with the multiple hyperbolas method |
| title_sort | characterization of beam quality of unstable laser beams with the multiple hyperbolas method |
| url | http://www.sciencedirect.com/science/article/pii/S2211379718321156 |
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