2011
DOI: 10.1080/09500340.2011.595835
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Complex Gaussian functions expansion method applied to truncated Gaussian beams

Abstract: An analytical expression for the beam propagation factor (M 2 factor) of truncated Gaussian beams was derived by using the complex Gaussian functions expansion method. The reasonability of the approximation of complex Gaussian functions expansion method is studied, and a comparison of this method with the generalised truncated second-order moments method and the asymptotic analysis method is also made. In general, an easy analytical expression for the M 2 factor of truncated laser beams can be derived by using… Show more

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