Atmospheric characterization with Shack-Hartmann wave-front sensor for  non-Kolmogorov turbulence

Changhui Rao; Wenhan Jiang; Ning Ling

doi:10.1117/1.1428742

1 February 2002 Atmospheric characterization with Shack-Hartmann wave-front sensor for non-Kolmogorov turbulence

Changhui Rao, Wenhan Jiang, Ning Ling

Optical Engineering, Vol. 41, Issue 2, (February 2002). https://doi.org/10.1117/1.1428742

Based on the principle of Shack-Hartmann wavefront sensors (SHWFS), the differential angle-of-arrival fluctuation coefficient, the slope structure-correlation coefficient, the generalized slope correlation coefficient, the variance of the angle-of-arrival fluctuation, the slope structure function, and the slope structure-correlation function are used to evaluate the power law exponent ? of the phase power spectrum and the generalized atmospheric coherence length p0 for non-Kolmogorov turbulence. These methods used to evaluate the atmospheric parameters are compared by introducing the additive measurement noise of SHWFS. The differential angle-of-arrival fluctuation coefficient, the slope structure-correlation coefficient, and the generalized slope correlation coefficient are only related to ? and independent of p0. The slope structure-correlation coefficient and the slope structure-correlation function can remove the effect of the measurement noise. The SHWFS data in the atmospheric experiments for laser beam propagation through a 1000-m horizontal path are utilized to evaluate ? and p0 according to the methods.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Changhui Rao, Wenhan Jiang, and Ning Ling "Atmospheric characterization with Shack-Hartmann wave-front sensor for non-Kolmogorov turbulence," Optical Engineering 41(2), (1 February 2002). https://doi.org/10.1117/1.1428742

Published: 1 February 2002

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