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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >The topological charge measurement of the vortex beam based on dislocation self-reference interferometry
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The topological charge measurement of the vortex beam based on dislocation self-reference interferometry

机译：基于位错自参考干涉法的涡流束的拓扑电荷测量

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摘要

Vortex beam generally refers to a kind of beam with orbital angular momentum, which has been widely implemented in the field of optical trapping, optical communication, rotation detection, etc. The topological charge (TC) of the orbital angular momentum is a characteristic value of the vortex beam, and its detection is very important. Based on the misaligned self-reference interferometer, we propose a method to measure the TC of the vortex beam. The simulation and experimental results show that the proposed method can measure the TC accurately. This method does not require strict alignment or other additional reference beam to ensure the coherence of the two beams. In addition, the device itself can verify the measurement results based on the two bifurcation points in the interferogram.
机译：涡流束通常是指具有轨道角动量的一种梁，其在光学俘获，光通信，旋转检测等领域中已广泛实现。轨道角动量的拓扑电荷（Tc）是一种特征值 涡流束，其检测非常重要。 基于未对准的自主参考干涉仪，我们提出了一种测量涡流束的TC的方法。 模拟和实验结果表明，该方法可以准确地测量TC。 该方法不需要严格的对准或其他附加参考光束以确保两个光束的相干性。 另外，该装置本身可以基于干涉图中的两个分叉点验证测量结果。

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