Holland Joseph E, Moreno Ignacio, Davis Jeffrey A, Sánchez-López María M, Cottrell Don M
Appl Opt. 2018 Feb 10;57(5):1005-1010. doi: 10.1364/AO.57.001005.
We encode q-plates where the angular orientation of the principal axis is varied spatially with a nonstandard distribution. In the usual q-plate design, the orientation of the optical axis depends linearly on the azimuthal angle. In this work, we examine cases where this azimuthal dependence is nonlinear. We consider two cases: first, where the principal axis distribution is like an inverse-tangent function of the azimuth; and second, where it displays linear and flat segments. This last case is proposed as a new method for encoding binary data into the azimuthal lobes of the vector beam. We encode these patterns using a spatial light modulator system that allows new and exotic q-plate designs without the difficulty of fabricating individual plates. Experimental results are presented.
我们对主轴角取向随空间呈非标准分布变化的q波片进行编码。在常规的q波片设计中，光轴方向线性依赖于方位角。在本工作中，我们研究这种方位角依赖关系为非线性的情况。我们考虑两种情况：第一种，主轴分布类似于方位角的反正切函数；第二种，它呈现线性和平直段。最后这种情况被提出作为一种将二进制数据编码到矢量光束方位角瓣中的新方法。我们使用空间光调制器系统对这些图案进行编码，该系统允许实现新颖奇特的q波片设计，而无需面临制造单个波片的困难。文中给出了实验结果。
