A.V. Averchenko – Post-graduate Student, Faculty of Physics, Department of Optics, Spectroscopy and Nanosystems Physics, Lomonosov Moscow State University

E-mail: aaverchenko93@gmail.com

A.M. Zotov – Ph. D. (Phys.-Math.), Senior Research Scientist, Faculty of Physics, Department of Optics, Spectroscopy and Nanosystems Physics, Lomonosov Moscow State University

E-mail: azotov@gmail.com

P.V. Korolenko – Dr. Sc. (Phys.-Math.), Professor, Faculty of Physics, Department of Optics, Spectroscopy and Nanosystems Physics, Lomonosov Moscow State University E-mail: pvkorolenko@rambler.ru

A universal method of restoring a wavefront of coherent light beams using shear interferometer was developed. Numerical testing of the proposed method by light fields with complex spatial structure was done. The method is applicable for weak and for strong radiation fluctuations modes. It allows restoring the structure of the wavefront in the presence of helical dislocations and in the presence of noise components. An ability of transformation of the wavefront perturbations in helical dislocations should be taken into consideration during an optimization of operating modes of measuring apparatus.

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