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Volume 21 Issue 5
Sep.  2013
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Optical properties of tube lasing medium

  • Received Date: 1996-06-04
  • The paper puts forward the idea about "C1 discrimination" and "thermally induced principal optical axis" for thermal lasing effect in tube lasing medium.The parameter C1 is a factor of the second term of the temperature distribution expression in the cross section of the tube lasing medium.The positive or negative value of C1 indicates the direction of the gradient between the inner wall and outer wall,relatively indicates the operating mode of the laser.In the effect of thermal lensing,basically the temperature gradient determines the distribution of refractive index in the radial direction.So it is called "thermally induced principal optical axis".This paper derives two dimension transfer matrix of ray and the focus length of the thermal lens,meanwhile points out the main method of improving beam quality.
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    Wittrock U,Weber H.Opt Lett,1991;16:1092~1093
    [2] 方荣生,方德寿科技人员常用公式与数表手册北京:机械工业出版社,1991:240

    [3] 卢亚雄,吕百达矩阵光学大连:大连理工大学出版社,1989:25

    [4] 方洪烈光学谐振腔理论北京:科学出版社,1981:345

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    Koechner W.Solid-state laser engineering.Berlin:Springer-Verlag,1976:354
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    Ghatak A K,Thyagarajan K.Contemporary optics.New York:Plenum Press,1978:10
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    Takada Y,Saito H,Fujioka T.IEEE J Q E,1988;Q E-24(1):11~12
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Optical properties of tube lasing medium

  • 1. Institute of Laser Technology & Engineering, HUST, Wuhan, 430074

Abstract: The paper puts forward the idea about "C1 discrimination" and "thermally induced principal optical axis" for thermal lasing effect in tube lasing medium.The parameter C1 is a factor of the second term of the temperature distribution expression in the cross section of the tube lasing medium.The positive or negative value of C1 indicates the direction of the gradient between the inner wall and outer wall,relatively indicates the operating mode of the laser.In the effect of thermal lensing,basically the temperature gradient determines the distribution of refractive index in the radial direction.So it is called "thermally induced principal optical axis".This paper derives two dimension transfer matrix of ray and the focus length of the thermal lens,meanwhile points out the main method of improving beam quality.

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