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arXiv 1208.4261physics.optics
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轨道Angular Momentum梁的Total Internal Reflection

Total Internal Reflection of Orbital Angular Momentum Beams

W. Löffler, N. Hermosa, Andrea Aiello, J. P. Woerdman

摘要:

研究了具有轨道角动量的光束在全内反射下的行为。这是在两个互补的实验研究:在第一个实验中,我们研究的OAM光束的几何位移后,全内反射(古斯-汉兴和Imbert-Fedorov位移,为每个空间和角度的变化),并在第二个实验中,我们确定的OAM模式的光束光谱的变化,再次全内反射。因此,我们发现,在第一种情况下,移位是独立的OAM和光束聚焦,而在第二种情况下,修改的OAM频谱发生依赖于输入的OAM模式,以及对光束聚焦。本文从实验和理论两个方面进行了研究。我们还展示了两种方法,一方面是光束移位,另一方面是OAM光谱变化,理论上是相关的。

英文摘要:

We investigate how beams with orbital angular momentum (OAM) behave under total internal reflection. This is studied in two complementary experiments: In the first experiment, we study geometric shifts of OAM beams upon total internal reflection (Goos-Hänchen and Imbert-Fedorov shifts, for each the spatial and angular variant), and in the second experiment we determine changes in the OAM mode spectrum of a beam, again upon total internal reflection. As a result we find that in the first case, the shifts are independent of OAM and beam focussing, while in the second case, modifications in the OAM spectrum occur which depend on the input OAM mode as well as on the beam focussing. This is investigated by experiment and theory. We also show how the two methods, beam shifts on the one hand, and OAM spectrum changes on the other, are related theoretically.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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