## Ara

Toplam kayıt 50, listelenen: 1-10

#### Scintillations of partially coherent multiple Gaussian beams in turbulence

(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 ...

#### Convergence of general beams into Gaussian intensity profiles after propagation in turbulent atmosphere

(Elsevier Science, 2006-09)

It is shown that a general shaped laser beam will eventually approach a Gaussian average intensity profile after propagation in turbulent atmosphere. In our formulation, source field at the exit plane of the laser is taken ...

#### Correlation properties of random electromagnetic beams in laser resonators

(Springer, 2009-12)

With the help of the generalized Huygens-Fresnel principle and the tensor approach for electromagnetic stochastic beams we investigate the behavior of their two-point spatial correlation properties on interaction with a ...

#### Propagation characteristics of higher-order annular Gaussian beams in atmospheric turbulence

(Elsevier Science, 2006-02-15)

The propagation characteristics of higher-order annular Gaussian (HOAG) beams in turbulence are investigated. From a HOAG source plane excitation, the average intensity of the receiver plane is developed analytically. This ...

#### Structure functions in turbulence for incidence with arbitrary-field distribution

(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 ...

#### Beam wander characteristics of cos and cosh-Gaussian beams

(Springer, 2009-06)

Within the context of a general beam formulation, beam wander characteristics of cos and cosh-Gaussian beams are derived and numerically evaluated. In our graphs, the fundamental Gaussian beam is used as a benchmark for ...

#### Hermite hyperbolic/sinusoidal Gaussian beams in ABCD systems

(Elsevier GMBH, 2007)

For a Hermite hyperbolic/sinusoidal Gaussian beam with focusing properties, passing through an arbitrarily shaped rectangular aperture on the source plane and an on-axis x-y asymmetric ABCD system, the receiver plane ...

#### Area scintillations of Bessel Gaussian and modified Bessel Gaussian beams of zeroth order

(Springer, 2010-01)

As an extension of our previous study, the area scintillation aspects of Bessel Gaussian and modified Bessel Gaussian beams of zeroth order are investigated. The analysis is carried out on the basis of equal source sizes ...

#### Evolution of the degree of polarization of an electromagnetic Gaussian Schell-model. beam in a Gaussian cavity

(Optical Soc Amer, 2008-10-01)

The interaction of an electromagnetic Gaussian Schell-model (EGSM) beam with a Gaussian cavity is analyzed. In particular, the evolution of the degree of polarization of the EGSM beam is investigated. The results show that ...

#### Paraxial propagation of a partially coherent flattened Gaussian beam through apertured ABCD optical systems

(Elsevier Science, 2008-06-15)

By expanding the hard aperture function into a finite sum of complex Gaussian functions, some approximate analytical formulae for the cross-spectral density of a partially coherent flattened Gaussian beam (FGB) propagating ...