Efficient Sorting of Orbital Angular Momentum States of Light
Efficient Sorting of Orbital Angular Momentum States of Light
复制标题
DOI：
10.1103/physrevlett.105.153601
复制
发表时间：
2010-10-04
影响因子：
8.6
通讯作者：
Padgett, Miles J.
中科院分区：
文献类型：
--
作者：
Berkhout, Gregorius C. G.;Lavery, Martin P. J.;Padgett, Miles J.
提出了一种利用两个静态光学元件对光的轨道角动量（OAM）态进行有效排序的方法。光学元件执行笛卡尔到对数极坐标变换，将对应于OAM状态的螺旋相位光束转换成具有横向相位梯度的光束。随后的透镜将每个输入OAM状态聚焦到不同的横向位置。我们通过使用两个空间光调制器来创建所需的光学元件，并将其应用于11个OAM状态的分离，从而在实验上证明了这一概念。
We present a method to efficiently sort orbital angular momentum (OAM) states of light using two static optical elements. The optical elements perform a Cartesian to log-polar coordinate transformation, converting the helically phased light beam corresponding to OAM states into a beam with a transverse phase gradient. A subsequent lens then focuses each input OAM state to a different lateral position. We demonstrate the concept experimentally by using two spatial light modulators to create the desired optical elements, applying it to the separation of eleven OAM states.