Expansion of the Laser Beam Wavefront in Terms of Zernike Polynomials in the Problem of Turbulence Testing

The results of a study of the wavefront distortions of laser radiation caused by artificial turbulence obtained in laboratory conditions using a fan heater are presented. Decomposition of the wavefront in terms of Zernike polynomials is a standard procedure that traditionally is used to investigate...

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Bibliographic Details
Published in:Applied sciences 2021-12, Vol.11 (24), p.12112
Main Authors: Rukosuev, Alexey, Nikitin, Alexander, Belousov, Vadim, Sheldakova, Julia, Toporovsky, Vladimir, Kudryashov, Alexis
Format: Article
Language:English
Subjects:
adaptive optics
Aperture
Astigmatism
Energy
Experiments
Hypotheses
Laboratories
Laser beams
Laser radiation
Lasers
Polynomials
Radiation
Sensors
Spectral analysis
turbulence
Wave fronts
wavefront sensor
Zernike polynomials
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Summary:The results of a study of the wavefront distortions of laser radiation caused by artificial turbulence obtained in laboratory conditions using a fan heater are presented. Decomposition of the wavefront in terms of Zernike polynomials is a standard procedure that traditionally is used to investigate the set of existing aberrations. In addition, the spectral analysis of the wavefront dynamics makes it possible to estimate the fraction of the energy distributed between different Zernike modes. It is shown that the fraction of energy related to the low-order polynomials is higher compared to the high-order polynomials. Also, one of the consequences of Taylor’s hypothesis is confirmed—low-order aberrations are slower compared to the higher-order ones.
ISSN:2076-3417
2076-3417
DOI:10.3390/app112412112