Methods for simulating turbulent phase screen

Zhang JianZhu; Zhang FeiZhou; Wu Yi

doi:10.3788/HPLPB20122410.2318

Volume 24 Issue 10

Sep. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(10): 2318-2325

Wang Songsong, Shu Ting, Yang Hanwu. Analytical expression of output pulse for stacked Blumlein line[J]. High Power Laser and Particle Beams, 2013, 25: 1409-1413. doi: 10.3788/HPLPB20132506.1409

Citation:

Zhang JianZhu, Zhang FeiZhou, Wu Yi. Methods for simulating turbulent phase screen[J]. High Power Laser and Particle Beams, 2012, 24: 2318-2325. doi: 10.3788/HPLPB20122410.2318

Wang Songsong, Shu Ting, Yang Hanwu. Analytical expression of output pulse for stacked Blumlein line[J]. High Power Laser and Particle Beams, 2013, 25: 1409-1413. doi: 10.3788/HPLPB20132506.1409

Citation:

Zhang JianZhu, Zhang FeiZhou, Wu Yi. Methods for simulating turbulent phase screen[J]. High Power Laser and Particle Beams, 2012, 24: 2318-2325. doi: 10.3788/HPLPB20122410.2318

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Methods for simulating turbulent phase screen

doi: 10.3788/HPLPB20122410.2318

Zhang JianZhu^{1,2,3
,
,},
Zhang FeiZhou²,
Wu Yi³

1.
Graduate University of Chinese Academy of Sciences,Beijing 100049,China;
2.
Institute of Applied Physics and Computational Mathematics,Beijing 100094,China;
3.
Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China

Received Date: 2012-02-10
Rev Recd Date: 2012-05-04
Publish Date: 2012-10-15

Abstract

Abstract

Some methods for simulating turbulent phase screen are summarized, and their characteristics are analyzed by calculating the phase structure function, decomposing phase screens into Zernike polynomials, and simulating laser propagation in the atmosphere. Through analyzing, it is found that, the turbulent high-frequency components are well contained by those phase screens simulated by the FFT method, but the low-frequency components are little contained. The low-frequency components are well contained by screens simulated by Zernike method, but the high-frequency components are not contained enough. The high-frequency components contained will be improved by increasing the order of the Zernike polynomial, but they mainly lie in the edge-area. Compared with the two methods above, the fractal method is a better method to simulate turbulent phase screens. According to the radius of the focal spot and the variance of the focal spot jitter, there are limitations in the methods except the fractal method. Combining the FFT and Zernike method or combining the FFT method and self-similar theory to simulate turbulent phase screens is an effective and appropriate way. In general, the fractal method is probably the best way.
- turbulence,
- phase screen,
- structure function,
- frequency

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