Vol. 15, issue 12, article # 9

Tartakovsky V.A., Sennikov V.A., Konyaev P.A., Lukin V.P. Wave phase conjugation under strong fluctuations and consecutive phasing in adaptive optics . // Atmospheric and oceanic optics. 2002. V. 15. No. 12. P. 1002-1010.
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Peculiarities of laser beam propagation with phase conjugation in turbulent medium under strong fluctuations are numerically investigated. The contrast gain is found connected with the appearance of zero-intensity points. It is proposed to measure a light wave phase on spatiotemporal trajectory at those aperture points, where intensity is significant and to determine boundaries of probable optical vortices, i.e., zones where intensity vanishes. Principles of operation and block diagrams are described of two new wave front meters, Hartmann scanning sensor and directional shear interferometer.