Using the statistical properties of phase fluctuations of the light field in a Shack-Hartmann wave front sensor

Denis V. Kazakov; Vitaly V. Lavrinov; L. N. Lavrinova

doi:10.1117/12.2539236

18 December 2019 Using the statistical properties of phase fluctuations of the light field in a Shack-Hartmann wave front sensor

Denis V. Kazakov, Vitaly V. Lavrinov, L. N. Lavrinova

Author Affiliations +

Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112080Z (2019) https://doi.org/10.1117/12.2539236
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation

Abstract

The optical element in the Shack-Hartman wavefront sensor is a microlens raster, which breaks the light field with phase distortions in the approximation of geometric optics into partial beams. The phase fluctuations of the light field within the sub-aperture correspond to the fluctuations of two angles of arrival or the fluctuations of two local inclinations of the wave front within the same limits of the sub-aperture and are associated with correlation relations. In this case, the correlation is a quantitative measure of the "similarity" of the two corresponding phase distributions within the subaperture on the two analyzed Shack-Hartmann patterns. The paper presents the results of numerical experiments on the reconstruction of the wave front using the correlation approach to the centering of focal spots.

Citation Download Citation

Denis V. Kazakov, Vitaly V. Lavrinov, and L. N. Lavrinova "Using the statistical properties of phase fluctuations of the light field in a Shack-Hartmann wave front sensor", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112080Z (18 December 2019); https://doi.org/10.1117/12.2539236

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