KURTOSIS FACTOR OF SOME TRUNCATED AND NON-TRUNCATED LASER BEAMS

Abstract Based on the intensity moments formalism, the closed-form expressions of the kurtosis factor of some truncated and non-truncated laser beams with rectangular symmetry, as Hermite-cosh-Gaussian and super-Gaussian beams, are derived and illustrated numerically. Some particular cases are also deduced. Our results are consistent with previous works and constitute a more generalized study of kurtosis factor of laser beams

SPECTRAL SHIFTS IN THE NEAR ZONE OF A PARTIALLY COHERENT FIELD AFTER PASSING THROUGH A CIRCULAR APERTURE

Abstract In this paper, we investigate theoretically the spectral shifts in the near zone of a partially coherent field after passing through a circular aperture. The numerical results are presented for Lorentzian and Gaussian profiles of the original spectrum of the source. Various factors which have influenced on the spectral characteristics are also analyzed

Fraunhofer diffraction by conical tracks

Abstract Within the framework of the Fraunhofer diffraction theory, we investigate the intensity characteristics in the far-field region for a diffractive conical aperture irradiated by a plane wave. This calculation is applied to diffraction by conical tracks.