| 基于CCD测量激光光束质量M~2 |
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| 引用本文： | 陈诚,郑加金,韦玮,韩晓晓,于广礼,周军.基于CCD测量激光光束质量M~2[J].发光学报,2017,38(5):642-647. |
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| 作者姓名： | 陈诚 郑加金 韦玮 韩晓晓 于广礼 周军 |
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| 作者单位： | 1. 南京邮电大学光电工程学院, 江苏 南京 210023;
2. 南京先进激光技术研究院, 江苏 南京 210038;
3. 光学信息技术科学教育部重点实验室南开大学, 天津 300071 |
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| 基金项目： | 光学信息技术科学教育部重点实验室(南开大学)开放基金，南京邮电大学国家自然科学基金孵化基金(NY215143)资助项目 Supported by The Open Fund of The Key Laboratory of Optical Information Science and Technology，Incubation Foundation of National Natural Science Foundation of Nanjing University of Posts and Telecommunications |
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| 摘 要： | 设计并搭建了一套基于CCD测量激光光束质量M2的系统。采用CCD测量激光光束在不同位置处的光束直径,通过非线性最小二乘法拟合测量数据获得光束腰斑直径和远场发散角,再通过公式计算得到激光光束质量M~2。利用本系统测量多组数据,并与专业M~2仪所测的数据进行对比,二者一致性较好,表明采用本实验装置测量激光光束质量M~2可以有效地替代M~2仪。
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| 关 键 词： | 激光光束质量M2 CCD 双曲线拟合 |
| 收稿时间： | 2016-11-24 |
Measurement of Laser Beam Quality M2 Based on CCD |
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| CHEN Cheng,ZHANG Jia-Jin,WEI Wei,HAN Xiao-xiao,Yu Guang-li,ZHOU Jun.Measurement of Laser Beam Quality M2 Based on CCD[J].Chinese Journal of Luminescence,2017,38(5):642-647. |
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| Authors: | CHEN Cheng ZHANG Jia-Jin WEI Wei HAN Xiao-xiao Yu Guang-li ZHOU Jun |
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| Institution: | 1. College of Opto-electronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2. Nanjing Institute of Advanced Laser Technology, Nanjing 210038, China;
3. Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China |
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| Abstract: | A system based on CCD to measure laser beam quality was designed and built.CCD was used to measure laser beam diameter at different locations.The collected data samples were then curve fitted to the beam propagation hyperbolic equation.Here the non-linear least squares method was employed to fit the hyperbolic curve,and the results of the fitting procedure yielded laser beam quality M2.To prove the accuracy and reliability of this self-made device,a comparison was made between the measurement results of this device and the specialized instrument M2 equipment,which showed a very good coherence.It indicates that this experiment device can replace M2 equipment. |
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| Keywords: | laser beam quality M2 CCD method hyperbolic beam fit |
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