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- Yangsheng Yuan, Yangjian Cai, Jun Qu, Halil Tanyer Eyyuboglu, Yahya Baykal
- Optics express
- 2009

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 derived based on the extended Huygens-Fresnel integral. The corresponding results of a standard Hermite-Gaussian beam (SHGB) in turbulent… (More)

- Chengliang Zhao, Yangjian Cai, Xuanhui Lu, Halil Tanyer Eyyuboglu
- Optics express
- 2009

Propagations of coherent and partially coherent flat-topped beams through a focusing optical system are formulated. The radiation force on a Rayleigh dielectric sphere induced by focused coherent and partially coherent flat-topped beams is investigated theoretically. It is found that we can increase the transverse trapping range at the planes near the focal… (More)

- Yahya Baykal, Halil Tanyer Eyyuboglu, Yangjian Cai
- Applied optics
- 2009

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 formulation is applied to two examples of partially coherent annular and partially coherent flat-topped Gaussian beams. Compared to… (More)

- Xiaoling Ji, Halil Tanyer Eyyuboglu, Yahya Baykal
- Optics express
- 2010

The analytical formula for the effective radius of curvature of radial Gaussian array beams propagating through atmospheric turbulence is derived, where coherent and incoherent beam combinations are considered. The influence of turbulence on the effective radius of curvature of radial Gaussian array beams is studied by using numerical calculation examples.

- Halil Tanyer Eyyuboglu, Yahya Baykal
- Optics express
- 2004

In a turbulent atmosphere, starting with a cos-Gaussian excitation at the source plane, the average intensity profile at the receiver plane is formulated. This average intensity profile is evaluated against the variations of link lengths, turbulence levels, two frequently used free-space optics wavelengths, and beam displacement parameters. We show that a… (More)

- Caglar Arpali, Canan Yazicioglu, Halil Tanyer Eyyuboglu, Serap Altay Arpali, Yahya Baykal
- Optics express
- 2006

A simulator is designed in MATLAB code which gives the propagation characteristics of a general-type beam in turbulent atmosphere. When the required source and medium parameters are entered, the simulator yields the average intensity profile along the propagation axis in a video format. In our simulator, the user can choose the option of a "user defined… (More)

- Yangjian Cai, Olga Korotkova, Halil Tanyer Eyyuboglu, Yahya Baykal
- Optics express
- 2008

Propagation of stochastic electromagnetic beams through paraxial ABCD optical systems operating through turbulent atmosphere is investigated with the help of the ABCD matrices and the generalized Huygens-Fresnel integral. In particular, the analytic formula is derived for the cross-spectral density matrix of an electromagnetic Gaussian Schell-model (EGSM)… (More)

- Halil Tanyer Eyyuboglu, Yahya Baykal
- Applied optics
- 2005

The average intensity and spreading of cosh-Gaussian laser beams in the turbulent atmosphere are examined. Our research is based principally on formulating the average-intensity profile at the receiver plane for cosh-Gaussian excitation. The limiting cases of our formulation for the average intensity are found to reduce correctly to the existing Gaussian… (More)

- Serap Altay Arpali, Halil Tanyer Eyyuboglu, Yahya Baykal
- Applied optics
- 2008

In order to analyze the effect of beam type on free space optical communication systems, bit error rate (BER) values versus signal-to-noise ratio (SNR) are calculated for zero order and higher order general beam types, namely for Gaussian, cos-Gaussian, cosh-Gaussian, and annular beams. BER analysis is based on optical scintillation using log-normal… (More)

- Yangjian Cai, Yuntian Chen, Halil Tanyer Eyyuboglu, Yahya Baykal
- Optics letters
- 2007

A tensor method is used to formulate the on-axis scintillation index for an elliptical Gaussian beam (EGB; astigmatic Gaussian beam) propagating in a weak turbulent atmosphere. Variations of the on-axis scintillation of an EGB are studied. It is interesting to find that the scintillation index of an EGB can be smaller than that of a circular Gaussian beam… (More)