Download Adaptive Beaming and Imaging in the Turbulent Atmosphere by Vladimir P. Lukin, Boris V. Fortes PDF

By Vladimir P. Lukin, Boris V. Fortes

End result of the large software of adaptive optical platforms, an knowing of optical wave propagation in randomly inhomogeneous media has develop into crucial, and several other numerical versions of person AOS elements and of effective correction algorithms were constructed. This monograph includes distinctive descriptions of the mathematical experiments that have been designed and performed in the course of greater than a decade's worthy of research.

Contents

- Preface to the English version

- advent

- Mathematical Simulation of Laser Beam Propagation within the surroundings

- Modeling an Adaptive Optics procedure

- Adaptive Imaging

- Minimization and part Correction of Thermal Blooming of High-Power Beams

- A Reference Beacon as a Key section of an Adaptive Optics procedure

- end

- Index

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Additional resources for Adaptive Beaming and Imaging in the Turbulent Atmosphere (SPIE Press Monograph Vol. PM109)

Example text

24) Substituting Eqs. 24) into Eq. 21), we find the relation sought: Mathematical Simulation of Laser Beam Propagation in the Atmosphere  n2  r   1 1  z  2   n1  r (1  z )  . 25) Let us use this relation in a problem of thermal blooming. 26) t CP where  is the absorption coefficient, 0 is the medium density, CP is specific  heat at constant pressure, V  z  is the wind velocity profile, and  is heat conductivity. 27) ( z )nt , nt  n / t . 0 C P Then consider the propagation of two high-power optical beams with the boundary conditions of Eqs.

31. P. P. A. Shlyonov, “Spatial statistics of laser beams in small-scale turbulence. Stochastical simulation,” Atm. , 9, pp. 1443–1449, 1996. 32. V. P. Lukin, Adaptive Formation of Beams and Images in the Atmosphere, Publishing House of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 1999. 33. N. Kolmogorov, “Local structure of turbulence in liquid under very large Rayleigh numbers,” Dok. Akad. Nauk SSR, 30, pp. 299–303, 1941. 34. M. Obukhov, “Energy distribution in spectra of a turbulent stream,” Dok.

10, 1975. E. S. Chesnokov, “Model presentation of atmospheric distortions for numerical analysis of statistical characteristics of optical beams,” Atm. 1294–1297, 1991. V. P. Lukin, “Modeling of an image observed through a turbulent atmosphere,” Proc. SPIE Vol. 1688, pp. 477–488, 1992. J. Rickling, Modern Optics, 1995. W. A. Vorontsov, “Adaptive aberration correction based on opto-electronic Zernike wavefront sensor and the decoupled stochastic parallel gradient descent control technique,” Proc.

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