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利用杨氏双缝干涉实验检测涡旋光束的拓扑荷数

DOI: 10.11830/ISSN.1000-5013.2009.06.0623

Keywords: 杨氏双缝干涉实验, 涡旋光束, 拓扑荷数, 轨道角动量

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Abstract:

研究涡旋光束经过杨氏双缝干涉后的干涉条纹,发现不同于平面波的竖直干涉条纹,涡旋光束的干涉条纹出现扭曲.从条纹的上部往下看,涡旋光束的干涉条纹出现横向的移动,而移动的方向和大小分别取决于涡旋光束拓扑荷数的符号和数值大小.对干涉条纹进行观察发现,实验观察结果和理论结果基本上保持一致,可以通过观察涡旋光束的干涉条纹来判断涡旋光束的轨道角动量.

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