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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Subject "Generation"

Now showing items 1-9 of 9

Apertured paraxial Bessel beams

Umul, Yusuf Ziya (Optical Soc Amer, 2010-03)

The paraxial Bessel beam is obtained by applying an approximation in the wavenumbers. The scattering of the beams by a circular aperture in an absorbing screen is investigated. The scattered fields are expressed in terms ...
Average intensity and spreading of an elegant Hermite-Gaussian beam in turbulent atmosphere

Yuan, Yangsheng; Cai, Yangjian; Qu, Jun; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2009-06-22)

The propagation of an elegant Hermite-Gaussian beam (EHGB) in turbulent atmosphere is investigated. Analytical propagation formulae for the average intensity and effective beam size of an EHGB in turbulent atmosphere are ...
Effect of spatial coherence on the scintillation properties of a dark hollow beam in turbulent atmosphere

Yuan, Yangsheng; Chen, Yahong; Liang, Chunhao; Cai, Yangjian; Baykal, Yahya (Springer, 2013-03)

With the help of a tensor method, we derive an explicit expression for the on-axis scintillation index of a circular partially coherent dark hollow (DH) beam in weakly turbulent atmosphere. The derived formula can be applied ...
Generalized tensor ABCD law for an elliptical Gaussian beam passing through an astigmatic optical system in turbulent atmosphere

Cai, Yangjian; Lin, Q.; Eyyuboğlu, Halil T.; Baykal, Yahya (Springer, 2009-02)

The propagation of an elliptical Gaussian beam (EGB) through an astigmatic ABCD optical system in a turbulent atmosphere is investigated. An analytical formula for the average intensity of an EGB and a generalized tensor ...
M-2-factor of coherent and partially coherent dark hollow beams propagating in turbulent atmosphere

Yuan, Yangsheng; Cai, Yangjian; Qu, Jun; Eyyuboğlu, Halil T.; Baykal, Yahya; Korotkova, Olga (Optical Society of America, 2009-09-28)

Analytical formula is derived for the M-2-factor of coherent and partially coherent dark hollow beams (DHB) in turbulent atmosphere based on the extended Huygens-Fresnel integral and the second-order moments of the Wigner ...
Partially coherent elegant Hermite-Gaussian beams

Wang, F.; Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya; Çil, Celal Zaim (Springer, 2010-09)

Elegant Hermite-Gaussian beams (EHGBs) are extended to the partially coherent case. An explicit and analytical formula is derived for the cross-spectral density of a partially coherent EHGB propagating through an aligned ...
Scintillation of astigmatic dark hollow beams in weak atmospheric turbulence

Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2008-07)

The scintillation properties of astigmatic dark hollow beams (DHBs) in weak atmospheric turbulence were investigated in detail. An explicit expression for the on-axis scintillation index of an astigmatic DH13 propagating ...
Scintillation properties of dark hollow beams in a weak turbulent atmosphere

Chen, Y.; Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (Springer, 2008-01)

The on-axis scintillation index for a circular dark hollow beam (DHB) propagating in a weak turbulent atmosphere is formulated, and the scintillation properties of a DHB are investigated in detail. The scintillation index ...
Scintillations of multiwavelength Gaussian, cos, cosh and annular Gaussian beams

Eyyuboğlu, Halil T. (Springer, 2012-01)

We provide the scintillation formulation for a multiwavelength source. Within this context, the scintillation aspects of Gaussian, cos, cosh and annular Gaussian beams are investigated. For all situations examined, it is ...

Now showing items 1-9 of 9

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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü by Subject "Generation"

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