17 May 2006 Optical phase conjugation for atmospheric turbulence assessment
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Abstract
This paper describes a method for real-time 'mapping' of atmospheric turbulence. This can be achieved through excitation of a Rayleigh laser-guide star and coherent detection of the wave-function in the back-scattered light. Detailed information about this function is essential for establishing efficient performance of an adaptive optics system and estimation of atmospheric turbulence parameters such as Fried radius, Rytov parameter, and isoplanatic angle. Amplification of low intensity back scattered light can be achieved by coherent detection based on multi-beam interaction in a non-linear medium. The wave-function of the scattered light can then be recorded and reconstructed with phase-shifting interferometry. The proposed method offers a new tool for wavefront assessment in beam control systems for high energy lasers and other applications.
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Vladimir Markov, Vladimir Markov, Anatoliy Khizhnyak, Anatoliy Khizhnyak, Dirk Woll, Dirk Woll, James Trolinger, James Trolinger, Frank Eaton, Frank Eaton, } "Optical phase conjugation for atmospheric turbulence assessment", Proc. SPIE 6215, Atmospheric Propagation III, 62150J (17 May 2006); doi: 10.1117/12.668028; https://doi.org/10.1117/12.668028
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