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Volume 28 Issue 1
Sep.  2013
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Citation:
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A comparative study of two different approaches to focal shifts

  • 1.

    Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China;

  • 2.

    National Laboratory of Laser Technology, HUST, Wuhan 430074, China

  • Received Date: 2003-02-20
    Accepted Date: 2003-05-14
  • There are two different approaches to deal with focal shifts,i.e.,Li-Wolf's and Greene Hall's approaches.In this paper focal shifts in elegant(complex-argument)Laguerre-Gaussian(ELG)beams are taken as a typical example,a detailed comparative study of the two approaches is made and numerical calculations results are illustr ated.The conclusion made in this paper is useful for some practical applications.
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    GREENE P L,HALL D G.Optics Express,1999,4(10):411～419.
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    MA H,LU B D.Optik,2000,111(6):273～279.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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A comparative study of two different approaches to focal shifts

  • 1. Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China;
  • 2. National Laboratory of Laser Technology, HUST, Wuhan 430074, China
  • Received Date: 2003-02-20
  • Accepted Date: 2003-05-14
  • Available Online: 2004-01-25

Abstract: There are two different approaches to deal with focal shifts,i.e.,Li-Wolf's and Greene Hall's approaches.In this paper focal shifts in elegant(complex-argument)Laguerre-Gaussian(ELG)beams are taken as a typical example,a detailed comparative study of the two approaches is made and numerical calculations results are illustr ated.The conclusion made in this paper is useful for some practical applications.

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