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《Journal of Qiongzhou University》 2015-02
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Changes in The Beam Parameters of Partially Coherent Cosh-Gaussian Beams after The Passage Through An Astigmatic Lens

LI Chang-wei;FENG Hao;College of Science and Technology,Qiongzhou University;  
The changes in the beam parameters of partially coherent cosh-Gaussian(Ch G) beams through an astigmatic lens are studied and the effect of astigmatism and spatial coherence parameter on the beam widths,waist positions and far-field divergence angles are stressed. The results show that the astigmatism in a difference between the beam widths,waist positions and far-field divergence angles in the x and y directions. Relative errors of the beam widths increases with the coherence increases and take on a large and a small peaks on both side of the geometrical focal plane. Relative errors of the beam widths in the x and y directions have the same variation at the geometric focal plane. Relative errors of the far-field divergence angles in the x direction increases as the coherence increases but decreased after the peak value. In the y direction,relative errors of the far-field divergence angles Increases linearly with the increase of astigmatism.
【Fund】: 三亚市院地科技合作项目(2014YD28)
【CateGory Index】: O435
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