Article ID Journal Published Year Pages File Type
9868114 Physics Letters A 2005 5 Pages PDF
Abstract
Based on the generalized truncated second-order moments, the generalized M2-factor (MG2-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 the MG2-factor of the truncated HGBs, which is dependent on the truncation parameter β and the beam order n, can be simplified to that of the truncated, the untruncated Gaussian beams and the untruncated HGBs. Also, the power fraction is demonstrated analytically and numerically, which shows that the area of the dark region across the HGBs increases as n increasing.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
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