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arXiv 1201.2646physics.optics
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不同拓扑荷$q$ -板产生矢量涡旋光束的偏振特性

Polarization pattern of vector vortex beams generated by $q$-plates with different topological charges

Filippo Cardano, Ebrahim Karimi, Sergei Slussarenko, Lorenzo Marrucci, Corrado de Lisio, Enrico Santamato

摘要:

本文描述了从中心带有拓扑电荷$q$的图形化双折射液晶板($q$ -板)出射的矢量光束的偏振拓扑。通过在光束横截面上逐点测量斯托克斯参量,实验研究了不同$q$板和不同入射偏振态下的偏振拓扑结构。此外,我们使用了一个调谐的$q=1/2$板产生圆柱形矢量光束的径向或方位角偏振,与动态切换这两种情况下,通过简单地改变输入光束的线性偏振的可能性。

英文摘要:

We describe the polarization topology of the vector beams emerging from a patterned birefringent liquid crystal plate with a topological charge $q$ at its center ($q$-plate). The polarization topological structures for different $q$-plates and different input polarization states have been studied experimentally by measuring the Stokes parameters point-by-point in the beam transverse plane. Furthermore, we used a tuned $q=1/2$-plate to generate cylindrical vector beams with radial or azimuthal polarizations, with the possibility of switching dynamically between these two cases by simply changing the linear polarization of the input beam.

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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