论文标题
模仿水涡的光学涡流产生
Generation of optical vortices imitating water vortices
论文作者
论文摘要
在光学元件中，我们可以使用特定方法（例如螺旋相或计算机生成的全息图）生成涡流梁。而在自然界中，值得注意的是，水可以通过圆形对称的孔产生涡流。因此，如果光束被光圈衍射时可以产生涡流吗？在这里，我们表明衍射的圆形极化束的菲涅尔区域中的光场载有轨道角动量，可以转移到被困的颗粒并进行轨道旋转。
In optics, we can generate vortex beams using specific methods such as spiral phase plates or computer generated holograms. While, in nature, it is worth noting that water can produce vortices by a circularly symmetrical hole. So, if a light beam can generate vortex when it is diffracted by an aperture? Here, we show that the light field in the Fresnel region of the diffracted circularly polarized beam carries orbital angular momentum, which can transfer to the trapped particles and make orbital rotation.
