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伪部分相干高斯-谢尔模型光束在湍流大气中传播的闪烁孔径平滑效应

钱仙妹 朱文越 饶瑞中

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伪部分相干高斯-谢尔模型光束在湍流大气中传播的闪烁孔径平滑效应

钱仙妹, 朱文越, 饶瑞中

The aperture averaging effect of scintillation of pseudo-partially Gaussian-Schell model beam propagation in turbulent atmosphere

Qian Xian-Mei, Zhu Wen-Yue, Rao Rui-Zhong
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  • 采用光传播的数值模拟方法, 对伪部分相干高斯-谢尔模型光束大气传播过程进行数值模拟, 统计分析不同接收口径内的光强起伏特性,计算闪烁的孔径平滑因子, 讨论了表征伪部分相干光的调制相位屏的相对变化频率对闪烁指数的影响, 并将其与充分发展的部分相干高斯-谢尔模型光束及完全相干光的闪烁指数对比. 结果表明: 降低光源相干性可大幅度降低闪烁指数, 但同时其闪烁指数的孔径平滑效应减弱, 在相同接收孔径下, 伪部分相干光闪烁指数的孔径平滑效果要比完全相干光差; 增大调制相位屏的相对变化频率可在一定程度上降低闪烁指数, 随着其相对频率的增大, 伪部分相干光的闪烁指数与部分相干光的结果趋于一致.
    By using numerical simulation, the propagation of pseudo-partially coherent Gaussian-Schell model beam in atmospheric turbulence is simulated. The properties of intensity fluctuation of different receiving aperture and aperture averaging factors are statistically analyzed. And the influence of relative changing frequency of the modulating phase which models the partial coherence of beam source on scintillation index is also discussed. The simulation results of pseudo-partially coherent beam are compared with those of the well-developed partially coherent beam and fully coherent Gaussian beam. It is found that the reduction of coherence degree may cause scintillation index to decrease. However, the aperture averaging effect is weakened at the same time. At the same receiving aperture diameter, the aperture averaging factor of pseudo-partially coherent beam is greater than that of the fully coherent beam. The increase of relative changing frequency of modulating phase may cause a reduction of scintillation index to some degree. And with the increase of relative changing frequency, the scintillation index of pseudo-partially coherent beam tends to be coincident with that of the partially coherent beam.
    • 基金项目: 国家自然科学基金(批准号:61107066)资助的课题.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61107066).
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    Ji X L, Huang T X, Lü B D 2006 Acta Phys. Sin. 55 978 (in Chinese) [季小玲, 黄太星, 吕百达 2006 物理学报 55 978]

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    Liu W H, Wu J 2004 Opt. Optoelectron. Technol. 2 30 (in Chinese) [刘维慧, 吴健 2004 光学与光电技术 2 30]

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    Voelz D, Fitzhenry K 2004 Proc. SPIE 5550 218

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    Xiao X, Voelz D 2006 Proc. SPIE 6304 63040L-1

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    Qian X M, Zhu W Y, Rao R Z 2009 Opt. Express 17 3782

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  • [1]

    Khmelevtsov S S 1973 Appl. Opt. 12 2421

    [2]

    Flatte S M, Wang G Y 1993 J. Opt. Soc. Am. A 10 2363

    [3]

    Shelton J D 1995 J. Opt. Soc. Am. A 12 2172

    [4]

    Andrews L C, Phillips R L, Sasiela R J, Parenti R 2005 Proc. SPIE 5793 28

    [5]

    Leader J C 1976 J. Opt. Soc. Am. A 66 536

    [6]

    Leader J C 1978 J. Opt. Soc. Am. A 68 175

    [7]

    Leader J C 1979 J. Opt. Soc. Am. A 69 73

    [8]

    Gbur G, Wolf E 2002 J. Opt. Soc. Am. A 19 1592

    [9]

    Ricklin J C, Davidson F M 2002 J. Opt. Soc. Am. A 19 1794

    [10]

    Shirai T, Dogariu A, Wolf E 2003 J. Opt. Soc. Am. A 20 1094

    [11]

    Dogariu A, Amarande S 2003 Opt. Lett. 28 10

    [12]

    Korotkova O, Andrews L C, Phillips R L 2004 Opt. Eng. 43 330

    [13]

    Polejaev V I, Ricklin J C 1998 Proc. SPIE 3432 103

    [14]

    Ricklin J C, Davidson F D, Weyrauch T 2001 Proc. SPIE 4538 13

    [15]

    Dogariu A, Amarande S 2003 Opt. Lett. 28 10

    [16]

    Ji X L, Huang T X, Lü B D 2006 Acta Phys. Sin. 55 978 (in Chinese) [季小玲, 黄太星, 吕百达 2006 物理学报 55 978]

    [17]

    Zhang J Z, Li Y K 2005 High Power Laser and Particle Beams 17 197 (in Chinese) [张建柱, 李有宽 2005 强激光与粒子束 17 197]

    [18]

    Liu W H, Wu J 2004 Opt. Optoelectron. Technol. 2 30 (in Chinese) [刘维慧, 吴健 2004 光学与光电技术 2 30]

    [19]

    Ji X L, Xiao X, Lü B D 2004 Acta Phys. Sin. 53 3996 (in Chinese) [季小玲, 肖希, 吕百达 2004 物理学报 53 3996]

    [20]

    Cai Y J, Lin Q 2002 Acta Opt. Sin. 22 542 (in Chinese) [蔡阳健, 林强 2002 光学学报 22 542]

    [21]

    Zhou P, Liu Z J, Xu X J, Chen Z L 2008 Acta Opt. Sin. 28 730 (in Chinese) [周朴, 刘泽金, 许晓军, 陈子伦 2008 光学学报 28 730]

    [22]

    Voelz D, Fitzhenry K 2004 Proc. SPIE 5550 218

    [23]

    Xiao X, Voelz D 2006 Proc. SPIE 6304 63040L-1

    [24]

    Qian X M, Zhu W Y, Rao R Z 2009 Opt. Express 17 3782

    [25]

    Coles W A, Filice J P, Frehlich R G, Yadlowsky M 1995 Appl. Opt. 34 208

    [26]

    Xiao X F, Voelz D 2006 Opt. Express 14 6986

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出版历程
  • 收稿日期:  2012-04-10
  • 修回日期:  2012-09-18
  • 刊出日期:  2013-02-05

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