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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
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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.
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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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