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GAO Yuan, FAN Zhong-wei, YU Jin, ZHAO Tian-zhuo, SHI Zhao-hui. New algorithm of knife-edge method measuring the size of hat spot and Gaussian spot[J]. LASER TECHNOLOGY, 2013, 37(2): 261-264. DOI: 10.7510/jgjs.issn.1001-3806.2013.02.030
Citation: GAO Yuan, FAN Zhong-wei, YU Jin, ZHAO Tian-zhuo, SHI Zhao-hui. New algorithm of knife-edge method measuring the size of hat spot and Gaussian spot[J]. LASER TECHNOLOGY, 2013, 37(2): 261-264. DOI: 10.7510/jgjs.issn.1001-3806.2013.02.030
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New algorithm of knife-edge method measuring the size of hat spot and Gaussian spot

  • 1.

    Graduate University, Chinese Academy of Science, Beijing 100080, China;

  • 2.

    The Academy of Opto-electronic, Chinese Academy of Science, Beijing 100094, China;

  • 3.

    Beijing GK Laser Technology Co., Ltd., Beijing 100085, China

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  • Received Date: May 01, 2012
  • Revised Date: July 16, 2012
  • Published Date: March 24, 2013
    Graphical Abstract
    • Abstract
  • In order to measure the radius of hat spots and Gaussian spots, knife-edge method was adopted for the theoretical analysis and experimental verification. A new iterative algorithm was proposed. The distance of knife-edge is in direct proportion to the radius of spot. The corresponding scale factors were calculated. It is convenient to obtain the radius of spots by multiplying a corresponding scale factor to the distance of knife-edge. The result shows this iterative algorithm is also valid for any spot whose distribution of intensity is already known.
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    • References (10)
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