利用扩展Huygens-Fresnel原理分析了大气湍流中圆形孔径限制下高斯光束的传播特性,得到了轴上平均光强的解析表达式,运用数值模拟方法计算了不同湍流强度、孔径大小和波长下的轴上平均光强.结果表明,轴上平均光强在近场发生振荡,其振荡幅度随湍流强度增强和发射孔径的增大而降低,振荡的周期随传播距离的增大而增加;在远场随传播距离的增大,振荡逐渐消失,平均光强平滑下降,最后一个平均光强极大值的位置与湍流强度和波长成反比,与发射孔径成正比.
参考文献
| [1] | Yahya B.Average transmittance in turbulence for partially coherent sources[J].Optics Communications,2004,231:129-136. |
| [2] | Jennifer C R,Frederic M D.Atmospheric optical communication with a Gaussian Schell beam[J].J.Opt.Soc.Am,2003,20(5):856-866. |
| [3] | Gong Zhiben.Some research progress on high-energy laser propagation in atmosphere[J].Chinese Journal of Quantum Electronics (量子电子学报),1998,15(2):114-133 (in Chinese). |
| [4] | Rao Ruizhong,et al.Statistical characteristics of laser intensity fluctuation and beam pattern in a real turbulence atmosphere[J].Chinese Journal of Quantum Electronics (量子电子学报),1998,15(2):155-163 (in Chinese). |
| [5] | Rao Ruizhong,et al.Experimental study of spot dancing of laser beam in a turbulent atmosphere[J].Chinese Journal of Lasers (中国激光),2000,27(11):1011-1015 (in Chinese). |
| [6] | Hail T E,et al.Average intensity and spreading of cosh-Gaussian laser beams in the turbulence atmosphere[J].Appl.Opt.,2005,44(6):976-983. |
| [7] | Ricklin J C,Davidson F M.Atmospheric turbulence effects on a partially coherent Gaussian beam:implications for free-space laser communication[J].J.Opt.Soc.Am,2002,19(9):1794-1802. |
| [8] | Hail T E,Yahya B.Analysis of reciprocity of cos-gaussian and cosh-gaussian laser beams in a turbulence atmospheric[J].Optics Express,2004,12(20):4659-4674. |
| [9] | Peter E A,et al.Modeling the optical coherence tomography geometry using the extended Huygens-Fresnel principle and Monte Carlo simulation[C].Proc.of SPIE,2003,5068:170-181. |
| [10] | Wang S C H,et al.Optical beam propagation for a partially coherent source in the turbulent atmosphere[J].J.Opt.Soc.Am,1979,69(9):1207-1304. |
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