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题名:
Error analysis of laser beam quality measured with CCD sensor and choice of the optimal threshold
作者: He, Yuanxing1,2,3; Li, Xinyang2,3
刊名: Optics and Laser Technology
出版日期: 2013
卷号: 45, 期号:1, 页码:671-677
学科分类: Beam quality - Laser applications - Laser beams - Photons - Sensors - Signal sampling
DOI: 10.1016/j.optlastec.2012.05.013
通讯作者: He, Y. (yuanxing-he@163.com)
文章类型: 期刊论文
中文摘要: Accurate measurement of beam quality is very important in different areas of laser applications. Take the far-field Gaussian spot as an example, the calculation error formulas of peak Strehl ratio and beam quality factor β are derived in the present of various error sources, such as background photon noise, CCD pixels non-ideal sampling, CCD dark voltage, read-out noise of CCD, signal photon noise and measurement window size. The calculation errors of laser beam quality changing with various error sources are presented in theory and the corresponding numerically simulated results are given. Theoretical and simulated results show that when the threshold is set at NB¯ σB, with NB¯ standing for average value of the error sources and σB standing for mean-square value of the fluctuation in error sources, the lowest calculating error of laser beam quality could be achieved. © 2012 Elsevier Ltd.
英文摘要: Accurate measurement of beam quality is very important in different areas of laser applications. Take the far-field Gaussian spot as an example, the calculation error formulas of peak Strehl ratio and beam quality factor β are derived in the present of various error sources, such as background photon noise, CCD pixels non-ideal sampling, CCD dark voltage, read-out noise of CCD, signal photon noise and measurement window size. The calculation errors of laser beam quality changing with various error sources are presented in theory and the corresponding numerically simulated results are given. Theoretical and simulated results show that when the threshold is set at NB¯ σB, with NB¯ standing for average value of the error sources and σB standing for mean-square value of the fluctuation in error sources, the lowest calculating error of laser beam quality could be achieved. © 2012 Elsevier Ltd.
收录类别: SCI ; Ei
语种: 英语
WOS记录号: WOS:000310401800101
ISSN号: 00303992
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6361
Appears in Collections:自适应光学技术研究室(八室)_期刊论文

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作者单位: 1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
2. Institute of Optics and Electronics, Chinese Academy of Science, Chengdu, Sichuan 610209, China
3. Key Laboratory on Adaptive Optics, Chinese Academy of Science, Chengdu, Sichuan 610209, China

Recommended Citation:
He, Yuanxing,Li, Xinyang. Error analysis of laser beam quality measured with CCD sensor and choice of the optimal threshold[J]. Optics and Laser Technology,2013,45(1):671-677.
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