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科技导报  2014 

高斯涡旋光束在ABCD光学系统中的传输

DOI: 10.3981/j.issn.1000-7857.2014.31.005, PP. 46-49

Keywords: 高斯涡旋光束,光学系统,自由空间,传输

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Abstract:

为了研究高斯涡旋光束在ABCD光学系统的传输演化规律,基于广义惠更斯菲涅耳积分公式,推导了拓扑荷为+1的高斯涡旋光束经ABCD傍轴光学系统传输的解析表达式,并数值模拟和分析高斯涡旋光束在自由空间传输中4个观察平面上的光强分布和相位分布的特点.结果表明随着传输距离的增加,高斯涡旋光束的光斑尺度明显增大,但光强也随之减小;同时从相位奇异点发出的等相位线由射线变成弧线,最终形成螺旋线结构.

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