The correspondence between flattened Gaussian beams and flat-topped multi-Gaussian beams
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1.
Department of Physics, Qiongzhou University, Wuzhishan 572200, China;
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2.
Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
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Received Date:
2003-10-20
Accepted Date:
2003-12-02
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Abstract
The comparison of the two mathematical-physical models describing flat-topped beams,i.e.,the flattened Gaussian beam (FGB) and flat-topped multi-Gaussian beam (FMGB) is made.Numerical results and physical analysis are given.It is found that both FMGB and FGB having the same M2 factor exhibit a similar transversal intensity distribution at a position of the equal generalized Fresnel number,whenever their waist width is equal or not.This conclusion is useful for practical applications.
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References
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