Davis J A, Carcole E, Cottrell D M
Appl Opt. 1996 Feb 1;35(4):593-8. doi: 10.1364/AO.35.000593.
Nondiffracting beams are of interest for optical metrology applications because the size of the beam does not change as the beam propagates. However, accuracy can be increased if the diameter of the beam is smaller. One technique for accomplishing this is to use the dark axial intensity profile associated with a higher-order nondiffracting Bessel function beam. We generate these higher-order Bessel function beams with a programmable spatial light modulator. We study the intensity patterns and the phase dependence of these nondiffracting beams. In addition, we examine interference effects caused by recording these patterns onto a binary spatial light modulator.
无衍射光束因其在传播过程中光束尺寸不变而在光学计量应用中备受关注。然而，如果光束直径更小，测量精度可以提高。实现这一点的一种技术是利用与高阶无衍射贝塞尔函数光束相关的暗轴强度分布。我们使用可编程空间光调制器生成这些高阶贝塞尔函数光束。我们研究了这些无衍射光束的强度分布和相位依赖性。此外，我们还研究了将这些图案记录到二元空间光调制器上所产生的干涉效应。
