Nondiffracting vortex beams with continuous orbital angular momentum order dependence
Nondiffracting vortex beams with continuous orbital angular momentum order dependence
复制标题
DOI：
10.1088/1464-4258/10/01/015009
复制
发表时间：
2007
影响因子：
--
通讯作者：
J. Gutiérrez-Vega;C. López-Mariscal
中科院分区：
文献类型：
--
作者：
J. Gutiérrez-Vega;C. López-Mariscal
我们介绍了一类新的无衍射分数涡旋光束，它以平滑跃迁的方式连接连续阶贝塞尔光束。新的分数阶光束保留了整数阶贝塞尔光束的无衍射特性，并且其每光子的轨道角动量可以在连续范围内取任意值。详细研究了物理上可实现的分数阶贝塞尔-高斯光束，即由高斯透过率赋值的分数阶贝塞尔光束通过一般ABCD光学系统的传播，并通过实验生成了几个分数阶光束的实例来补充，这些实例反过来证实了我们的理论预测。
We introduce a new class of nondiffracting fractional vortex beams that connect Bessel beams of successive order in a smooth transition. The new fractional-order beams preserve the same nondiffracting feature of Bessel beams of integer order, and their orbital angular momentum per photon can take any value in a continuous range. The propagation of the more physically realizable fractional-order Bessel–Gauss beams, i.e. fractional Bessel beams apodized by a Gaussian transmittance, through general ABCD optical systems is studied in detail and is complemented by the experimental generation of several instances of fractional beams which in turn confirms our theoretical predictions.