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Scintillation properties of dark hollow beams in a weak turbulent atmosphere

Research paper by Y. Chen, Y. Cai, H.T. Eyyuboğlu, Y. Baykal

Indexed on: 24 Nov '07Published on: 24 Nov '07Published in: Applied Physics B



Abstract

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 for a DHB reduces to the scintillation index for a Gaussian beam, an annular beam and a flat-topped beam under certain conditions. It is found that the scintillation index of a DHB is closely related to the beam parameters and can be lower than that of a Gaussian beam, an annular beam and a flat-topped beam in a weak turbulent atmosphere at smaller waist sizes and longer propagation lengths.