Generalized M2-factor of hollow Gaussian beams through a hard-edge circular aperture
作者： Dongmei Deng
DOI: 10.1016/J.PHYSLETA.2005.04.081
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摘要: Abstract Based on the generalized truncated second-order moments, M 2 -factor ( G -factor) of three-dimensional hollow Gaussian beams (HGBs) through a hard-edge circular aperture is studied in cylindrical coordinate system analytically and numerically. The closed-form expression for HGBs, which dependent truncation parameter β beam order n , can be simplified to that truncated, untruncated HGBs. Also, power fraction demonstrated numerically, shows area dark region across HGBs increases as increasing.
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