Atmospheric turbulence effects on partially coherent flat-topped Gaussian beam

zhang jian-zhu; li you-kuan

Volume 17 Issue 02

Feb. 2005

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Article Navigation > High Power Laser and Particle Beams > 2005 > 17(02): 197-

xu yewei, luo xuan, zhu fanghua, et al. Fabrication of low density poly(vinylcyclohexane) foams[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

zhang jian-zhu, li you-kuan. Atmospheric turbulence effects on partially coherent flat-topped Gaussian beam[J]. High Power Laser and Particle Beams, 2005, 17: 197- .

xu yewei, luo xuan, zhu fanghua, et al. Fabrication of low density poly(vinylcyclohexane) foams[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

zhang jian-zhu, li you-kuan. Atmospheric turbulence effects on partially coherent flat-topped Gaussian beam[J]. High Power Laser and Particle Beams, 2005, 17: 197- .

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Atmospheric turbulence effects on partially coherent flat-topped Gaussian beam

zhang jian-zhu¹,
li you-kuan²

1.
Graduate School,CAEP,P.O.Box 2101,Beijing 100088,China;
2.
Institute of Applied Physics and Computational Mathematics,P.O.Box 8009,Beijing 100088,China

Publish Date: 2005-02-15

Abstract

Abstract

Propagation of laser beam through turbulent atmosphere was numerically studied using phase screen approximation. And partially coherent flat-topped Gaussian beam was expanded as a superposition of independent Hermite-Gaussian modes. In order to fit the results of numerical simulation, two expressions were deduced. One describes the dependence of the rms width of the beam on the order number, the spreading distance and the intensity of turbulence. The other describes the dependence of the coherent length of the beam on that of it’s initial time and that of turbulence. At the same, it is concluded that the coherente of laser beams are worse, the effects of them by turbulence are less; And that on the propagation of laser beams through trubulence, the effects of the initial coherent characte
- spatial coherence,
- atmospheric turbulence,
- partially coherent flat-topped gaussian beam

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