Experimental studies of the influence of loss of measurement data on the quality of reconstruction of a wavefront distorted by atmospheric turbulence using a Shack–Hartmann sensor

Bolbasova, L.A., Lukin, V.P., Soin, E.L.

For Russian citation (Opticheskii Zhurnal):

Больбасова Л.А., Лукин В.П., Соин Е.Л. Экспериментальные исследования влияния потери данных измерений на качество реконструкции искажённого атмосферной турбулентностью волнового фронта датчиком Шэка–Гартмана // Оптический журнал. 2024. Т. 91. № 8. С. 25–34. http://doi.org/10.17586/1023-5086-2024-91-08-25-34

Bolbasova L.A., Lukin V.P., Soin E.L. Experimental studies of the influence of loss of measurement data on the quality of reconstruction of a wavefront distorted by atmospheric turbulence using a Shack–Hartmann sensor [in Russian] // Opticheskii Zhurnal. 2024. V. 91. № 8. P. 25–34. http://doi.org/10.17586/1023-5086-2024-91-08-25-34

For citation (Journal of Optical Technology):

Abstract:

Subject of study. The wavefront of laser radiation is distorted by atmospheric turbulence. Aim of study. Experimental study of the influence of loss data because of central obstruction and fragmentation of the entrance pupil of the optical system on the reconstruction of the wavefront of laser radiation propagating along a horizontal atmospheric path, distorted by atmospheric turbulence using a Shack–Hartmann sensor. Method. The studies were carried out during the propagation of laser radiation along a horizontal atmospheric path, at various coefficients of central obstruction and fragmentation. The results in terms of Zernike polynomials are analyzed. Main results. The results of experimental studies of the reconstruction of the wavefront of laser radiation, distorted by atmospheric turbulence, using a Schack–Hartmann sensor with fragmentation and central obstruction of the entrance pupil are presented. It is shown that the influence of central obstruction is not significant on wavefront reconstruction; only the underestimation of spherical aberration that occurs may require modification of the adaptive correction algorithm of adaptive optics systems. When the pupil is vignetted, the most values are occurred aberrations of coma. Practical significance. The quality of adaptive optics correcting laser radiation distortions depends on the correctness measurements of wavefront sensor. The results obtained in the study are important in the development of adaptive optical systems for transmitting and focusing laser radiation through the atmosphere.

Keywords:

adaptive optics, atmospheric turbulence, wavefront, aberration, wavefront sensor Shack–Hartmann

Acknowledgements:

this work was supported by the Ministry of Science and Higher Education of the Russian Federation (V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Sciences.

OCIS codes: 010.1080, 010.7350, 110.1080

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