Направление: 010900 Прикладные математика и физика
Профиль: Лазерная физика и квантовая оптика
Кафедра общей физики 1
Научный руководитель:  д. ф.-м. н. Венедиктов В. Ю.

Two-wavelength measurement using a pair of sensors Shack – Hartmann
Ivanov Evgenii

When developing, characterizing and investigating the novel adaptive optical system or its components, it is very important to have the reliable and repeatable atmospheric test-bed, but it also very well known that reliability and especially repeatability of the open air atmospheric path are very bad. Probably the best approach to such tests and characterization is to use the in-door extended atmospheric path with very low intrinsic distortions and with controllable artificial distortions.
In this work, we have been researching adaptive optics wavefront correction system operating according to the algorithm of phase conjugation. One of the best sites of such a kind is placed in a small town of Sosnovy Bor (Leningrad region of Russian federation, 80 kilometers from St.-Petersburg) at the premises of Public Limited Company "Scientific research Institute for Optoelectronic Instrument Engineering" ("NII OEP" PLC).
The in-door free atmosphere path with the total length up to 700 m provides the unique capabilities for testing optical systems in the stable, controlled and repeatable atmospheric conditions. We present and discuss the results of experimental investigation of Shack-Hartmann wavefront sensing and closed loop adaptive optics compensation of atmospheric distortions at this beamlet. It is planned that these investigations will be continued with the “faster” adaptive optical systems and with the use of artificial sources of turbulence.