Zernike decomposition of aberrations in strong atmospheric turbulence

R. Holmes; R. Gudimetla; M. Werth

doi:10.1117/12.2674131

3 October 2023 Zernike decomposition of aberrations in strong atmospheric turbulence

R. Holmes, R. Gudimetla, M. Werth

Author Affiliations +

Proceedings Volume 12693, Unconventional Imaging, Sensing, and Adaptive Optics 2023; 126931J (2023) https://doi.org/10.1117/12.2674131
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The decomposition of turbulence-induced phase aberrations into Zernike polynomials is performed using simulation and numerical techniques, extending well-known analytic results when scintillation is weak. A spherical-wave geometry is assumed. Strong scintillation (Rytov variance > 0.3) has an impact on the distribution of aberration strength, and this impact depends on range and wavelength. A saturation effect is observed. Anisotropy affects the distribution of aberrations between nearby Zernike orders. Non-Kolmogorov exponents lower than 11/3 in magnitude tend to reduce the lower-order aberrations and slightly enhance the higher aberrations, as expected. The interplay of strong turbulence, anisotropy, and non-Kolmogorov exponents is also explored. Significant deviations from the existing weak-turbulence theory are found in some cases.

Conference Presentation

Citation Download Citation

R. Holmes, R. Gudimetla, and M. Werth "Zernike decomposition of aberrations in strong atmospheric turbulence", Proc. SPIE 12693, Unconventional Imaging, Sensing, and Adaptive Optics 2023, 126931J (3 October 2023); https://doi.org/10.1117/12.2674131

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