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Browsing Mühendislik Fakültesi by Author "Yuan, Yangsheng"

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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 ...
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 ...
Propagation factor of partially coherent flat-topped beam array in free space and turbulent atmosphere

Yuan, Yangsheng; Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya; Chen, Jun (Elsevier Science Ltd, 2012-05)

Analytical expressions for the propagation factor of partially coherent radial flat-topped (FT) beam array in free-space and turbulent atmosphere are derived. Our formulae can be applied to study the beam propagation factors ...
Propagation factors of Hermite-Gaussian beams in turbulent atmosphere

Yuan, Yangsheng; Cai, Yangjian; Qu, Jun; Eyyuboğlu, Halil T.; Baykal, Yahya (Elsevier Science Ltd, 2010-11)

Based on the extended Huygens-Fresnel integral and the second-order moments of the Wigner distribution function, an analytical formulae for the propagation factors (M-2-factors) of coherent and partially coherent one-dimensional ...
Propagation factors of laser array beams in turbulent atmosphere

Yuan, Yangsheng; Cai, Yangjian; Zhao, Chengliang; Eyyuboğlu, Halil T.; Baykal, Yahya (Taylor&Francis Ltd, 2010)

The propagation factors of phased locked laser array beams of radial and rectangular symmetries in a turbulent atmosphere are investigated based on the extended Huygens-Fresnel integral and the Wigner distribution function. ...
Scintillation index of a multi-Gaussian Schell-model beam in turbulent atmosphere

Yuan, Yangsheng; Liu, Xianlong; Wang, Fei; Chen, Yahong; Cai, Yangjian; Qu, Jun; Eyyuboğlu, Halil T. (Elsevier Science Bv, 2013-09-15)

Multi-Gaussian Schell-model (MGSM) beam was introduced recently [Sahin and Korotkova, Opt. Lett. 37 (2012) 2970; Korotkova et al., J. Opt. Soc. Am. A 29 (2012) 2159]. In this paper, an explicit expression for the scintillation ...
Scintillation properties of a truncated flat-topped beam in a weakly turbulent atmosphere

Liu, Xianlong; Liang, Chunhao; Yuan, Yangsheng; Cai, Yangjian; Eyyuboğlu, Halil T. (Elsevier Science Ltd, 2013-02)

We derive derive an explicit expression for the scintillation index of a truncated flat-topped (FT) beam in a weakly turbulent atmosphere. Under suitable conditions, the derived formula reduces to the expression for the ...

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Browsing Mühendislik Fakültesi by Author "Yuan, Yangsheng"

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