Statistical analysis of a wavefront distorted by laboratory turbulence in terms of Zernike polynomials

Julia V. Sheldakova; Vadim N. Belousov; Alexander N. Nikitin; Vladimir V. Toporovsky; Alexey L. Rukosuev; Alexis V. Kudryashov

doi:10.1117/12.2614533

4 March 2022 Statistical analysis of a wavefront distorted by laboratory turbulence in terms of Zernike polynomials

Julia V. Sheldakova, Vadim N. Belousov, Alexander N. Nikitin, Vladimir V. Toporovsky, Alexey L. Rukosuev, Alexis V. Kudryashov

Author Affiliations +

Proceedings Volume 11987, Laser Resonators, Microresonators, and Beam Control XXIV; 119870L (2022) https://doi.org/10.1117/12.2614533
Event: SPIE LASE, 2022, San Francisco, California, United States

Conference Poster

Abstract

A fast adaptive optical system, operating at frequencies up to 2000 Hz (frames per second), was used to analyze turbulence created in the laboratory by using a fan heater. The turbulent distortion bandwidth was approximately 100 Hz. The expansion of the wavefront in terms of Zernike polynomials was used when processing the raw data. Then the statistical analysis was performed separately for each polynomial. As a result, the degree of predominance of definite aberrations in the wavefront of laser radiation was obtained. Taylor's hypothesis is confirmed: low-order aberrations are slower than high-order ones. The dependence of the correction quality on the number of corrected Zernike polynomials is also shown.

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Julia V. Sheldakova, Vadim N. Belousov, Alexander N. Nikitin, Vladimir V. Toporovsky, Alexey L. Rukosuev, and Alexis V. Kudryashov "Statistical analysis of a wavefront distorted by laboratory turbulence in terms of Zernike polynomials", Proc. SPIE 11987, Laser Resonators, Microresonators, and Beam Control XXIV, 119870L (4 March 2022); https://doi.org/10.1117/12.2614533

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