Asymptotic approach to the truncated cosh-Gaussian beams |
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Authors: | Baida Lü Shirong Luo |
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Institution: | (1) Institute of Laser Physics and Chemistry, Sichuan University, Chengdu, 610064, China |
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Abstract: | The propagation behavior and M
2-factor of truncated cosh-Gaussian (ChG) beams are studied by using the asymptotic approach. Detailed numerical results are given to illustrate the dependence of M
2-factor on the beam decentered parameter , truncation fraction p and power fraction f. Our results are self-consistent and reduce to those of Pare and Belanger Opt. Commun.
123, p. 679 (1996a); Proc. SPIE
2870, p. 104 (1996b)]. The advantage of the approach is shown, and the problems introduced by the hard-aperture diffraction and the approach used are discussed. |
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Keywords: | asymptotic approach cosh-Gaussian (ChG) beam M
2-factor truncation |
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