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Konu "Propagation" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

Konu "Propagation" için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

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  • Scintillations in weak turbulence of annular beams whose individual components are incoherent 
    Baykal, Yahya; Eyyuboğlu, Halil T.; Cai, Y. (Electromagnetics Acad, 2010-03-22)
    The scintillation index, arising from the intensity fluctuations in weak atmospheric turbulence of annular beams whose individual components are incoherent, is formulated. For such beams whose annularities are obtained by ...
  • Scintillations of higher-order laser beams in non-Kolmogorov medium 
    Baykal, Yahya (Optical Soc Amer, 2014-04-01)
    In an atmospheric medium that shows a non-Kolmogorov turbulence behavior, the variation of the on-axis scintillation index is evaluated when higher-order laser modes are used as the excitation. The Rytov method is employed ...
  • Scintillations of incoherent flat-topped Gaussian source field in turbulence 
    Baykal, Yahya; Eyyuboğlu, Halil T. (Optical Soc Amer, 2007-08-01)
    The intensity fluctuations of incoherent flat-topped Gaussian beams are evaluated when such sources are used in weakly turbulent horizontal atmospheric links. The formulation is developed for a detector having a response ...
  • Scintillations of laser array beams 
    Eyyuboğlu, Halil T.; Baykal, Yahya; Cai, Yangjian (Springer, 2008-05)
    The scintillation index of a laser array beam is analytically derived and numerically evaluated for weak turbulence conditions. On-axis as well as off-axis positions of the receiver plane are considered. Our graphical ...
  • Scintillations of optical plane and spherical waves in underwater turbulence 
    Ata, Yalçın; Baykal, Yahya (Optical Soc Amer, 2014-07-01)
    The scintillation indices of optical plane and spherical waves propagating in underwater turbulent media are evaluated by using the Rytov method, and the variations in the scintillation indices are investigated when the ...
  • Scintillations of partially coherent Laguerre Gaussian beams 
    Yüceer, Mehmet; Eyyuboğlu, Halil T.; Lukin, I. P. (Springer, 2010-12)
    Scintillations of Laguerre-Gaussian (LG) beams for weak atmospheric turbulence conditions are derived for on-axis receiver positions by using Huygens-Fresnel (HF) method in semi-analytic fashion. Numerical evaluations ...
  • Scintillations of partially coherent multiple Gaussian beams in turbulence 
    Baykal, Yahya; Eyyuboğlu, Halil T.; Cai, Yangjian (Optical Soc Amer, 2009-04-01)
    For an incidence composed of partially coherent multiple Gaussian beams, Huygens-Fresnel principle-based on-axis scintillation index is formulated in a weakly turbulent homogeneous horizontal atmospheric path. Our general ...
  • State of polarization of a stochastic electromagnetic beam in an optical resonator 
    Korotkova, Olga; Yao, Min; Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2008-11)
    On the basis of the unified theory of coherence and polarization, we investigate the behavior of the state of polarization of a stochastic electromagnetic beam in a Gaussian cavity. Formulations both in terms of Stokes ...
  • Structure functions in turbulence for incidence with arbitrary-field distribution 
    Baykal, Yahya (Optical Soc Amer, 2007-06)
    In a turbulent atmosphere, the log-amplitude, phase-correlation, and structure functions are formulated for light sources exhibiting arbitrary-field distribution. This is done by extending the formulations of the correlation ...