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Volume 26 Issue 4
Sep.  2013
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Citation:
shu

The effect of Gaussian beam on particle size measurement

  • 1.

    Department of Physics, South China Normal University, Guangzhou, 510631

  • Received Date: 2001-04-03
    Accepted Date: 2001-07-11
  • The Fraunhofer diffraction of Gaussian beam by a circular aperture are derived and are compared to that of plane wave in this paper.Through theoretical and numerical analyze,it shows that both results are the similar while the radius of Gaussian beam is much larger than the radius of circlar aperture,otherwise,they are different.Then the Fraunhofer diffraction of Gaussian beam by a group of particles with the same size are given.
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    Shen J Q,Wang N N.Chinese J Lasers(in Chinese),1998,25(10):891～895.
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    Zhou G,Tian J D,Zhang Y M et al.J Optoelectronics Laser(in Chinese),1998,9(1):32～34.
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    Zhen G,Liu T Y,Chen Sh Zh.Chinese J Lasers(in Chinese),1998,25(4):377～380.
    [4]

    Van de Hulst H C.Light Scattering by Small Particles. New York: John Wiley Sons Inc,1957.
    [5] 刘子超,赵云惠.浓雾及颗粒的激光测量原理.北京:宇航出版社,1988.
    [6] 顾德门 J W.傅里叶光学导论.北京:科学出版社,1979.
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    Gu Y J,Yang H J.College Physics(in Chinese),1999,18(6):6～8.
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The effect of Gaussian beam on particle size measurement

  • 1. Department of Physics, South China Normal University, Guangzhou, 510631
  • Received Date: 2001-04-03
  • Accepted Date: 2001-07-11
  • Available Online: 2002-07-25

Abstract: The Fraunhofer diffraction of Gaussian beam by a circular aperture are derived and are compared to that of plane wave in this paper.Through theoretical and numerical analyze,it shows that both results are the similar while the radius of Gaussian beam is much larger than the radius of circlar aperture,otherwise,they are different.Then the Fraunhofer diffraction of Gaussian beam by a group of particles with the same size are given.

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