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《Journal of Qiongzhou University》 2015-02
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Propagation Characteristics of Nonparaxial Cosh-squared Gaussian Beams

KANG Xiao-ping;HE Zhong;College of Science and Engineering,Qiongzhou University;  
On the basis of the second-order moment of the power density,the far-field divergence angle and M2 factor of nonparaxial cosh-squared Gaussian beams are illustrated and analyzed with numerical simulation. The conclusions are as following. As the parameter 1/f→0,the far-field divergence angle approaches an asymptotic value of 63. 4350,which is independent of the decentred parameter. The M2 factor of nonparaxial cosh-squared Gaussian beams depends not only on the decentred parameter but also on the parameter 1/f.When 1/f. becomes small enough,the M2 factor may be less than 1. The M2 factor varies non-monotonously with 1/f. when parameter is relatively large.
【Fund】: 三亚市院地科技合作项目(2014YD28)
【CateGory Index】: O436
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【Citations】
Chinese Journal Full-text Database 6 Hits
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