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Volume 23 Issue 5
Sep.  2013
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shu

The far-field intensity distribution and beam quality of unstable resonators

  • 1.

    Institute of Laser Physics & Chemisty, Sichuan University, Chengdu, 610064

  • Received Date: 1998-08-25
  • Based on the analysis of the far-field intensity distribution,the beam quality of unstable resonators has been studied in detail.Ithas been proven that the intensity in the far-field of unstable resonato rs is the zeroth order Bessel beam distribution,if the obscure ratio ε→1.N umerical calculation and analysis have shown that the "power in the bucket" curve is a suitable method used to characterize the beam quality in the far-field of unstable resonators.Meanwhile,the shortcomings of this method have been poin ted out.
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    Siegman A E.OSA TOPS,1988;17:184～199
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    Siegman A E.SPIE,1990;1224:2～14
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    Born M,Wolf E.Priciples of Optics,fifth edition,Oxford:Pergmon Press,1975
    [5] 杜祥琬.中国激光,1997;24(4):327～332
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    Borghi R,Santarsiero M.Opt Lett,1997;22:262～264
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    Nemes G,Serna J.O S A TOPS,1998;17:200～207
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The far-field intensity distribution and beam quality of unstable resonators

  • 1. Institute of Laser Physics & Chemisty, Sichuan University, Chengdu, 610064
  • Received Date: 1998-08-25
  • Available Online: 1999-09-25

Abstract: Based on the analysis of the far-field intensity distribution,the beam quality of unstable resonators has been studied in detail.Ithas been proven that the intensity in the far-field of unstable resonato rs is the zeroth order Bessel beam distribution,if the obscure ratio ε→1.N umerical calculation and analysis have shown that the "power in the bucket" curve is a suitable method used to characterize the beam quality in the far-field of unstable resonators.Meanwhile,the shortcomings of this method have been poin ted out.

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