Diffraction of short pulsed Laguerre-Gaussian beams
V.A. Banakh, L.O. Gerasimova
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: лагерр-гауссов пучок, импульсное излучение, параболическое волновое уравнение, Laguerre-Gaussian beam, short pulse, parabolic wave equation
Abstract
Based on the numerical solution of the parabolic wave equation for the complex spectral amplitude of the wave field the propagation of a short pulsed Laguerre-Gaussian beam with femtosecond duration was studied. It has been shown that the difraction broadening of the Laguerre-Gaussian beam decreases with the pulse duration in comparison with continuous wave radiation.
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