Atmospheric turbulence with a Shack-Hartmann wavefront sensor

Matthias Schoeck; Earl J. Spillar

doi:10.1117/12.321653

11 September 1998 Atmospheric turbulence with a Shack-Hartmann wavefront sensor

Matthias Schoeck, Earl J. Spillar

Proceedings Volume 3353, Adaptive Optical System Technologies; (1998) https://doi.org/10.1117/12.321653
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

We show how to resolve the autocorrelation of wavefront- sensor measurements as they are commonly taken by adaptive- optics systems into terms due to individual atmospheric layers. We exploit this factorization to measure the strength and wind speed of each turbulent layer.We show that the Kolmogorov theory provides a good description of the data and find values of Fried's parameter, r₀, that are in good agreement with other measurements. Finally, a quantitative estimate of the validity of Taylor's frozen flow hypothesis is obtained.

Citation Download Citation

Matthias Schoeck and Earl J. Spillar "Atmospheric turbulence with a Shack-Hartmann wavefront sensor", Proc. SPIE 3353, Adaptive Optical System Technologies, (11 September 1998); https://doi.org/10.1117/12.321653

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