Davis J A, Carcole E, Cottrell D M
Appl Opt. 1996 Feb 1;35(4):599-602. doi: 10.1364/AO.35.000599.
Nondiffracting beams are of interest for optical metrology applications because the size and shape of the beams do not change as the beams propagate. We have created a generating pattern consisting of a linear combination of two nondiffracting patterns. This pattern forms a nondiffracting interference pattern that appears as a circular array of nondiffracting spots. More complicated multiplexed arrays are also constructed that simultaneously yield two different nondiffracting patterns. We generate these Bessel function arrays with a programmable spatial light modulator. Such arrays would be useful for angular alignment and for optical interconnection applications.
无衍射光束因其在传播过程中光束的大小和形状不变而在光学计量应用中备受关注。我们创建了一种由两个无衍射图案的线性组合构成的生成图案。该图案形成一种无衍射干涉图案，表现为无衍射光斑的圆形阵列。我们还构建了更复杂的复用阵列，可同时产生两种不同的无衍射图案。我们用可编程空间光调制器生成这些贝塞尔函数阵列。这样的阵列将有助于角度对准和光学互连应用。
